* provider/google: Resources depending on the `network` attribute can now reference the network by `self_link` or `name` ([#8639](https://github.com/hashicorp/terraform/issues/8639))
* Terraform now validates the uniqueness of variable and output names in your configurations. In prior versions certain ways of duplicating variable names would work. This is now a configuration error (and should've always been). If you get an error running Terraform you may need to remove the duplicates. Done right, this should not affect the behavior of Terraform.
* **New Remote State Backend:** `local` ([#8647](https://github.com/hashicorp/terraform/issues/8647))
* Data source blocks can now have a count associated with them ([#8635](https://github.com/hashicorp/terraform/issues/8635))
* The count of a resource can now be referenced for interpolations: `self.count` and `type.name.count` work ([#8581](https://github.com/hashicorp/terraform/issues/8581))
* Provisioners now support connection using IPv6 in addition to IPv4 ([#6616](https://github.com/hashicorp/terraform/issues/6616))
* provider/aws: API Gateway Custom Authorizer ([#8535](https://github.com/hashicorp/terraform/issues/8535))
* provider/aws: Add MemoryReservation To `aws_ecs_container_definition` data source ([#8437](https://github.com/hashicorp/terraform/issues/8437))
* provider/aws: Add ability Enable/Disable For ELB Access logs ([#8438](https://github.com/hashicorp/terraform/issues/8438))
* provider/aws: Add support for assuming a role prior to performing API operations ([#8638](https://github.com/hashicorp/terraform/issues/8638))
* provider/aws: Export `arn` of `aws_autoscaling_group` ([#8503](https://github.com/hashicorp/terraform/issues/8503))
* provider/aws: More robust handling of Lambda function archives hosted on S3 ([#6860](https://github.com/hashicorp/terraform/issues/6860))
* provider/aws: Spurious diffs of `aws_s3_bucket` policy attributes due to JSON field ordering are reduced ([#8615](https://github.com/hashicorp/terraform/issues/8615))
* provider/aws: `name_regex` attribute for local post-filtering of `aws_ami` data source results ([#8403](https://github.com/hashicorp/terraform/issues/8403))
* provider/aws: Support for lifecycle hooks at ASG creation ([#5620](https://github.com/hashicorp/terraform/issues/5620))
* provider/consul: Make provider settings truly optional ([#8551](https://github.com/hashicorp/terraform/issues/8551))
* provider/statuscake: Add support for contact-group id in statuscake test ([#8417](https://github.com/hashicorp/terraform/issues/8417))
* core: Changing a module source from file to VCS no longer errors ([#8398](https://github.com/hashicorp/terraform/issues/8398))
* core: Configuration is now validated prior to input, fixing an obscure parse error when attempting to interpolate a count ([#8591](https://github.com/hashicorp/terraform/issues/8591))
* core: JSON configuration with resources with a single key parse properly ([#8485](https://github.com/hashicorp/terraform/issues/8485))
* core: States with duplicate modules are detected and an error is shown ([#8463](https://github.com/hashicorp/terraform/issues/8463))
* core: Validate uniqueness of variables/outputs in a module ([#8482](https://github.com/hashicorp/terraform/issues/8482))
* core: `-var` flag inputs starting with a number work and was fixed in such a way that this should overall be a lot more resilient to inputs ([#8044](https://github.com/hashicorp/terraform/issues/8044))
* provider/aws: Do not set empty string to state for `aws_vpn_gateway` availability zone ([#8645](https://github.com/hashicorp/terraform/issues/8645))
* provider/aws: Fix. Adjust create and destroy timeout in aws_vpn_gateway_attachment. ([#8636](https://github.com/hashicorp/terraform/issues/8636))
* provider/aws: Handle missing EFS mount target in `aws_efs_mount_target` ([#8529](https://github.com/hashicorp/terraform/issues/8529))
* provider/aws: If an `aws_security_group` was used in Lambda function it may have prevented you from destroying such SG due to dangling ENIs created by Lambda service. These ENIs are now automatically cleaned up prior to SG deletion ([#8033](https://github.com/hashicorp/terraform/issues/8033))
* provider/aws: Increase `aws_route_table` timeouts from 1 min to 2 mins ([#8465](https://github.com/hashicorp/terraform/issues/8465))
* provider/aws: Increase aws_rds_cluster timeout to 40 minutes ([#8623](https://github.com/hashicorp/terraform/issues/8623))
* provider/aws: Refresh `aws_route` from state if `aws_route_table` not found ([#8443](https://github.com/hashicorp/terraform/issues/8443))
* provider/aws: Remove `aws_elasticsearch_domain` from state if it doesn't exist ([#8643](https://github.com/hashicorp/terraform/issues/8643))
* provider/aws: Remove unsafe ptr dereferencing from ECS/ECR ([#8514](https://github.com/hashicorp/terraform/issues/8514))
* provider/aws: Set `apply_method` to state in `aws_db_parameter_group` ([#8603](https://github.com/hashicorp/terraform/issues/8603))
* provider/aws: Stop `aws_instance``source_dest_check` triggering an API call on each terraform run ([#8450](https://github.com/hashicorp/terraform/issues/8450))
* provider/aws: Wait for `aws_route_53_record` to be in-sync after a delete ([#8646](https://github.com/hashicorp/terraform/issues/8646))
* provider/aws: `aws_volume_attachment` detachment errors are caught ([#8479](https://github.com/hashicorp/terraform/issues/8479))
* provider/aws: adds resource retry to `aws_spot_instance_request` ([#8516](https://github.com/hashicorp/terraform/issues/8516))
* provider/aws: Add validation of Health Check target to aws_elb. ([#8578](https://github.com/hashicorp/terraform/issues/8578))
* provider/aws: Skip detaching when aws_internet_gateway not found ([#8454](https://github.com/hashicorp/terraform/issues/8454))
* provider/aws: Handle all kinds of CloudFormation stack failures ([#5606](https://github.com/hashicorp/terraform/issues/5606))
* provider/azurerm: Reordering the checks after an Azure API Get ([#8607](https://github.com/hashicorp/terraform/issues/8607))
* provider/chef: Fix "invalid header" errors that could occur ([#8382](https://github.com/hashicorp/terraform/issues/8382))
* provider/openstack: changes were made to how volumes attached to instances are detected. If you attached a volume to an instance out of band to Terraform, it will be detached upon the next apply. You can resolve this by adding a `volume` entry for the attached volume.
* provider/aws: Fix possible crash if using duplicate Route53 records ([#8399](https://github.com/hashicorp/terraform/issues/8399))
* provider/aws: Refresh `aws_autoscaling_policy` from state on 404 ([#8430](https://github.com/hashicorp/terraform/issues/8430))
* provider/aws: Fix crash with VPC Peering connection accept/requests ([#8432](https://github.com/hashicorp/terraform/issues/8432))
* provider/aws: AWS SpotFleet Requests now works with Subnets and AZs ([#8320](https://github.com/hashicorp/terraform/issues/8320))
* provider/aws: Refresh `aws_cloudwatch_event_target` from state on `ResourceNotFoundException` ([#8442](https://github.com/hashicorp/terraform/issues/8442))
* provider/aws: Validate `aws_iam_policy_attachment` Name parameter to stop being empty ([#8441](https://github.com/hashicorp/terraform/issues/8441))
* provider/aws: Fix segmentation fault in `aws_api_gateway_base_path_mapping` resource ([#8466](https://github.com/hashicorp/terraform/issues/8466))
* provider/google: fix crash regression from Terraform 0.7.1 on `google_compute_firewall` resource ([#8390](https://github.com/hashicorp/terraform/issues/8390))
* provider/openstack: Volume Attachment and Detachment Fixes ([#8172](https://github.com/hashicorp/terraform/issues/8172))
* provider/archive support folders in output_path ([#8278](https://github.com/hashicorp/terraform/issues/8278))
* provider/aws: Introduce `aws_elasticsearch_domain``elasticsearch_version` field (to specify ES version) ([#7860](https://github.com/hashicorp/terraform/issues/7860))
* provider/aws: CloudWatch Metrics are now supported for `aws_route53_health_check` resources ([#8319](https://github.com/hashicorp/terraform/issues/8319))
* provider/aws: Query all pages of group membership ([#6726](https://github.com/hashicorp/terraform/issues/6726))
* provider/aws: Query all pages of IAM Policy attachments ([#7779](https://github.com/hashicorp/terraform/issues/7779))
* provider/aws: Change the way ARNs are built ([#7151](https://github.com/hashicorp/terraform/issues/7151))
* provider/aws: Add support for Elasticsearch destination to firehose delivery streams ([#7839](https://github.com/hashicorp/terraform/issues/7839))
* provider/aws: Retry AttachInternetGateway and increase timeout on `aws_internet_gateway` ([#7891](https://github.com/hashicorp/terraform/issues/7891))
* provider/aws: Add support for Enhanced monitoring to `aws_rds_cluster_instance` ([#8038](https://github.com/hashicorp/terraform/issues/8038))
* provider/aws: Add ability to set Requests Payer in `aws_s3_bucket` ([#8065](https://github.com/hashicorp/terraform/issues/8065))
* provider/aws: Add ability to set canned ACL in `aws_s3_bucket_object` ([#8091](https://github.com/hashicorp/terraform/issues/8091))
* provider/aws: Allow skipping credentials validation, requesting Account ID and/or metadata API check ([#7874](https://github.com/hashicorp/terraform/issues/7874))
* provider/aws: API gateway request/response parameters can now be specified as map, original `*_in_json` parameters deprecated ([#7794](https://github.com/hashicorp/terraform/issues/7794))
* provider/aws: Add support for `promotion_tier` to `aws_rds_cluster_instance` ([#8087](https://github.com/hashicorp/terraform/issues/8087))
* provider/aws: Allow specifying custom S3 endpoint and enforcing S3 path style URLs via new provider options ([#7871](https://github.com/hashicorp/terraform/issues/7871))
* provider/aws: Add ability to set Storage Class in `aws_s3_bucket_object` ([#8174](https://github.com/hashicorp/terraform/issues/8174))
* provider/aws: Treat `aws_lambda_function` w/ empty `subnet_ids`&`security_groups_ids` in `vpc_config` as VPC-disabled function ([#6191](https://github.com/hashicorp/terraform/issues/6191))
* provider/aws: Allow `source_ids` in `aws_db_event_subscription` to be Updatable ([#7892](https://github.com/hashicorp/terraform/issues/7892))
* provider/aws: Make `aws_efs_mount_target` creation fail for 2+ targets per AZ ([#8205](https://github.com/hashicorp/terraform/issues/8205))
* provider/aws: Add `force_destroy` option to `aws_route53_zone` ([#8239](https://github.com/hashicorp/terraform/issues/8239))
* provider/aws: Support import of `aws_s3_bucket` ([#8262](https://github.com/hashicorp/terraform/issues/8262))
* provider/aws: Increase timeout for retrying creation of IAM role ([#7733](https://github.com/hashicorp/terraform/issues/7733))
* provider/aws: Add ability to set peering options in aws_vpc_peering_connection. ([#8310](https://github.com/hashicorp/terraform/issues/8310))
* provider/azure: add custom_data argument for azure_instance resource ([#8158](https://github.com/hashicorp/terraform/issues/8158))
* provider/azurerm: Adds support for uploading blobs to azure storage from local source ([#7994](https://github.com/hashicorp/terraform/issues/7994))
* provider/azurerm: Storage blob contents can be copied from an existing blob ([#8126](https://github.com/hashicorp/terraform/issues/8126))
* provider/datadog: Allow `tags` to be configured for monitor resources. ([#8284](https://github.com/hashicorp/terraform/issues/8284))
* provider/google: allows atomic Cloud DNS record changes ([#6575](https://github.com/hashicorp/terraform/issues/6575))
* provider/google: Move URLMap hosts to TypeSet from TypeList ([#7472](https://github.com/hashicorp/terraform/issues/7472))
* provider/google: Support static private IP addresses in `resource_compute_instance` ([#6310](https://github.com/hashicorp/terraform/issues/6310))
* provider/google: Add support for using a GCP Image Family ([#8083](https://github.com/hashicorp/terraform/issues/8083))
* provider/openstack: Support updating the External Gateway assigned to a Neutron router ([#8070](https://github.com/hashicorp/terraform/issues/8070))
* provider/openstack: Support for `value_specs` param on `openstack_networking_network_v2` ([#8155](https://github.com/hashicorp/terraform/issues/8155))
* provider/openstack: Add `value_specs` param on `openstack_networking_subnet_v2` ([#8181](https://github.com/hashicorp/terraform/issues/8181))
* provider/vsphere: Improved SCSI controller handling in `vsphere_virtual_machine` ([#7908](https://github.com/hashicorp/terraform/issues/7908))
* provider/vsphere: Adding disk type of `Thick Lazy` to `vsphere_virtual_disk` and `vsphere_virtual_machine` ([#7916](https://github.com/hashicorp/terraform/issues/7916))
* provider/vsphere: Standardizing datastore references to use builtin Path func ([#8075](https://github.com/hashicorp/terraform/issues/8075))
* provider/consul: add tls config support to consul provider ([#7015](https://github.com/hashicorp/terraform/issues/7015))
* remote/consul: Support setting datacenter when using consul remote state ([#8102](https://github.com/hashicorp/terraform/issues/8102))
* provider/google: Support import of `google_compute_instance_template` ([#8147](https://github.com/hashicorp/terraform/issues/8147)), `google_compute_firewall` ([#8236](https://github.com/hashicorp/terraform/issues/8236)), `google_compute_target_pool` ([#8133](https://github.com/hashicorp/terraform/issues/8133)), `google_compute_fowarding_rule` ([#8122](https://github.com/hashicorp/terraform/issues/8122)), `google_compute_http_health_check` ([#8121](https://github.com/hashicorp/terraform/issues/8121)), `google_compute_autoscaler` ([#8115](https://github.com/hashicorp/terraform/issues/8115))
* core: Fix issue preventing `taint` from working with resources that had no other attributes in their diff ([#8167](https://github.com/hashicorp/terraform/issues/8167))
* core: CLI will only run exact match commands ([#7983](https://github.com/hashicorp/terraform/issues/7983))
* core: Fix panic when resources ends up null in state file ([#8120](https://github.com/hashicorp/terraform/issues/8120))
* core: Fix panic when validating a count with a unprefixed variable ([#8243](https://github.com/hashicorp/terraform/issues/8243))
* core: Divide by zero in interpolations no longer panics ([#7701](https://github.com/hashicorp/terraform/issues/7701))
* core: Fix panic on some invalid interpolation syntax ([#5672](https://github.com/hashicorp/terraform/issues/5672))
* provider/aws: guard against missing image_digest in `aws_ecs_task_definition` ([#7966](https://github.com/hashicorp/terraform/issues/7966))
* provider/aws: `aws_cloudformation_stack` now respects `timeout_in_minutes` field when waiting for CF API to finish an update operation ([#7997](https://github.com/hashicorp/terraform/issues/7997))
* provider/aws: Prevent errors when `aws_s3_bucket``acceleration_status` is not available in a given region ([#7999](https://github.com/hashicorp/terraform/issues/7999))
* provider/aws: Add state filter to `aws_availability_zone`s data source ([#7965](https://github.com/hashicorp/terraform/issues/7965))
* provider/aws: Handle lack of snapshot ID for a volume in `ami_copy` ([#7995](https://github.com/hashicorp/terraform/issues/7995))
* provider/aws: Retry association of IAM Role & instance profile ([#7938](https://github.com/hashicorp/terraform/issues/7938))
* provider/aws: Fix line ending errors/diffs with IAM Server Certs ([#8074](https://github.com/hashicorp/terraform/issues/8074))
* provider/aws: Fixing IAM data source policy generation to prevent spurious diffs ([#6956](https://github.com/hashicorp/terraform/issues/6956))
* provider/aws: Correct how CORS rules are handled in `aws_s3_bucket` ([#8096](https://github.com/hashicorp/terraform/issues/8096))
* provider/aws: allow numeric characters in RedshiftClusterDbName ([#8178](https://github.com/hashicorp/terraform/issues/8178))
* provider/aws: `aws_security_group` now creates tags as early as possible in the process ([#7849](https://github.com/hashicorp/terraform/issues/7849))
* provider/aws: Defensively code around `db_security_group` ingress rules ([#7893](https://github.com/hashicorp/terraform/issues/7893))
* provider/aws: `aws_spot_fleet_request` throws panic on missing subnet_id or availability_zone ([#8217](https://github.com/hashicorp/terraform/issues/8217))
* provider/aws: Terraform fails during Redshift delete if FinalSnapshot is being taken. ([#8270](https://github.com/hashicorp/terraform/issues/8270))
* provider/azurerm: `azurerm_storage_account` will interrupt for Ctrl-C ([#8215](https://github.com/hashicorp/terraform/issues/8215))
* provider/digitalocean: trim whitespace from ssh key ([#8173](https://github.com/hashicorp/terraform/issues/8173))
* provider/digitalocean: Enforce Lowercase on IPV6 Addresses ([#7652](https://github.com/hashicorp/terraform/issues/7652))
* provider/google: Use resource specific project when making queries/changes ([#7029](https://github.com/hashicorp/terraform/issues/7029))
* provider/google: Fix read for the backend service resource ([#7476](https://github.com/hashicorp/terraform/issues/7476))
* provider/mysql: `mysql_user` works with MySQL versions before 5.7.6 ([#8251](https://github.com/hashicorp/terraform/issues/8251))
* provider/openstack: Fix typo in OpenStack LBaaSv2 pool resource ([#8179](https://github.com/hashicorp/terraform/issues/8179))
* provider/vSphere: Fix for IPv6 only environment creation ([#7643](https://github.com/hashicorp/terraform/issues/7643))
* provider/google: Correct update process for authorized networks in `google_sql_database_instance` ([#8290](https://github.com/hashicorp/terraform/issues/8290))
* Terraform's built-in plugins are now distributed as part of the main Terraform binary, and use the go-plugin framework. Overrides are still available using separate binaries, but will need recompiling against Terraform 0.7.
* The `terraform plan` command no longer persists state. This makes the command much safer to run, since it is now side-effect free. The `refresh` and `apply` commands still persist state to local and remote storage. Any automation that assumes that `terraform plan` persists state will need to be reworked to explicitly call `terraform refresh` to get the equivalent side-effect. (The `terraform plan` command no longer has the `-state-out` or `-backup` flags due to this change.)
* The `concat()` interpolation function can no longer be used to join strings.
* Lists materialized using splat syntax, for example `aws_instance.foo.*.id` are now ordered by the count index rather than lexographically sorted. If this produces a large number of undesirable differences, you can use the new `sort()` interpolation function to produce the previous behaviour.
* You now access the values of maps using the syntax `var.map["key"]` or the `lookup` function instead of `var.map.key`.
* Outputs on `terraform_remote_state` resources are now top level attributes rather than inside the `output` map. In order to access outputs, use the syntax: `terraform_remote_state.name.outputname`. Currently outputs cannot be named `config` or `backend`.
* AWS Provider
*`aws_elb` now defaults `cross_zone_load_balancing` to `true`
*`aws_instance`: EC2 Classic users may continue to use `security_groups` to reference Security Groups by their `name`. Users who are managing Instances inside VPCs will need to use `vpc_security_group_ids` instead, and reference the security groups by their `id`. Ref https://github.com/hashicorp/terraform/issues/6416#issuecomment-219145065
*`aws_kinesis_firehose_delivery_stream`: AWS Kinesis Firehose has been refactored to support Redshift as a destination in addition to S3. As a result, the configuration has changed and users will need to update their configuration to match the new `s3_configuration` block. Checkout the documentaiton on [AWS Kinesis Firehose](http://localhost:4567/docs/providers/aws/r/kinesis_firehose_delivery_stream.html) for more information ([#7375](https://github.com/hashicorp/terraform/issues/7375))
*`aws_route53_record`: `latency_routing_policy`, `geolocation_routing_policy`, and `failover_routing_policy` block options have been added. With these additions we’ve renamed the `weight` attribute to `weighted_routing_policy`, and it has changed from a string to a block to match the others. Please see the updated documentation on using `weighted_routing_policy`: https://www.terraform.io/docs/providers/aws/r/route53_record.html . ([#6954](https://github.com/hashicorp/terraform/issues/6954))
*`aws_db_instance` now defaults `publicly_accessible` to false
* Microsoft Azure Provider
* In documentation, the "Azure (Resource Manager)" provider has been renamed to the "Microsoft Azure" provider.
*`azurerm_dns_cname_record` now accepts a single record rather than a list of records
*`azurerm_virtual_machine` computer_name now Required
* Openstack Provider
*`openstack_networking_subnet_v2` now defaults to turning DHCP on.
*`openstack_fw_policy_v1` now correctly applies rules in the order they are specified. Upon the next apply, current rules might be re-ordered.
* The `member` attribute of `openstack_lb_pool_v1` has been deprecated. Please ue the new `openstack_lb_member_v1` resource.
* Docker Provider
*`keep_updated` parameter removed from `docker_image` - This parameter never did what it was supposed to do. See relevant docs, specifically `pull_trigger`& new `docker_registry_image` data source to understand how to keep your `docker_image` updated.
* Atlas Provider
*`atlas_artifact` resource has be deprecated. Please use the new `atlas_artifact` Data Source.
* CloudStack Provider
* All deprecated parameters are removed from all `CloudStack` resources
* **Data sources** are a new kind of primitive in Terraform. Attributes for data sources are refreshed and available during the planning stage. ([#6598](https://github.com/hashicorp/terraform/issues/6598))
* **Lists and maps** can now be used as first class types for variables and may also be passed between modules. ([#6322](https://github.com/hashicorp/terraform/issues/6322))
* **State management CLI commands** provide a variety of state manipulation functions for advanced use cases. This should be used where possible instead of manually modifying state files. ([#5811](https://github.com/hashicorp/terraform/issues/5811))
* **State Import** allows a way to import existing resources into Terraform state for many types of resource. Initial coverage of AWS is quite high, and it is straightforward to add support for new resources.
* **New Command:** `terraform state` to provide access to a variety of state manipulation functions ([#5811](https://github.com/hashicorp/terraform/issues/5811))
* **New Option:** `terraform output` now supports the `-json` flag to print a machine-readable representation of outputs ([#7608](https://github.com/hashicorp/terraform/issues/7608))
* **New Data Source:** `aws_ami` ([#6911](https://github.com/hashicorp/terraform/issues/6911))
* **New Data Source:** `aws_availability_zones` ([#6805](https://github.com/hashicorp/terraform/issues/6805))
* **New Data Source:** `aws_iam_policy_document` ([#6881](https://github.com/hashicorp/terraform/issues/6881))
* **New Data Source:** `aws_s3_bucket_object` ([#6946](https://github.com/hashicorp/terraform/issues/6946))
* **New Data Source:** `aws_ecs_container_definition` ([#7230](https://github.com/hashicorp/terraform/issues/7230))
* **New Data Source:** `atlas_artifact` ([#7419](https://github.com/hashicorp/terraform/issues/7419))
* **New Data Source:** `docker_registry_image` ([#7000](https://github.com/hashicorp/terraform/issues/7000))
* **New Data Source:** `consul_keys` ([#7678](https://github.com/hashicorp/terraform/issues/7678))
* **New Provider:** `random` - allows generation of random values without constantly generating diffs ([#6672](https://github.com/hashicorp/terraform/issues/6672))
* **New Remote State Provider:** - `gcs` - Google Cloud Storage ([#6814](https://github.com/hashicorp/terraform/issues/6814))
* **New Remote State Provider:** - `azure` - Microsoft Azure Storage ([#7064](https://github.com/hashicorp/terraform/issues/7064))
* core: Tainted resources now show up in the plan and respect dependency ordering ([#6600](https://github.com/hashicorp/terraform/issues/6600))
* core: The `lookup` interpolation function can now have a default fall-back value specified ([#6884](https://github.com/hashicorp/terraform/issues/6884))
* core: The `terraform plan` command no longer persists state. ([#6811](https://github.com/hashicorp/terraform/issues/6811))
* core: The `jsonencode` interpolation function now supports encoding lists and maps ([#6749](https://github.com/hashicorp/terraform/issues/6749))
* core: Add the ability for resource definitions to mark attributes as "sensitive" which will omit them from UI output. ([#6923](https://github.com/hashicorp/terraform/issues/6923))
* core: Support `.` in map keys ([#7654](https://github.com/hashicorp/terraform/issues/7654))
* core: Enhance interpolation functions to account for first class maps and lists ([#7832](https://github.com/hashicorp/terraform/issues/7832)) ([#7834](https://github.com/hashicorp/terraform/issues/7834))
* command: Remove second DefaultDataDirectory const ([#7666](https://github.com/hashicorp/terraform/issues/7666))
* provider/aws: Add `dns_name` to `aws_efs_mount_target` ([#7428](https://github.com/hashicorp/terraform/issues/7428))
* provider/aws: Add `force_destroy` to `aws_iam_user` for force-deleting access keys assigned to the user ([#7766](https://github.com/hashicorp/terraform/issues/7766))
* provider/aws: Add `option_settings` to `aws_db_option_group` ([#6560](https://github.com/hashicorp/terraform/issues/6560))
* provider/aws: Add more explicit support for Skipping Final Snapshot in RDS Cluster ([#6795](https://github.com/hashicorp/terraform/issues/6795))
* provider/aws: Add support for S3 Bucket Acceleration ([#6628](https://github.com/hashicorp/terraform/issues/6628))
* provider/aws: Add support for `kms_key_id` to `aws_db_instance` ([#6651](https://github.com/hashicorp/terraform/issues/6651))
* provider/aws: Specifying more than one health check on an `aws_elb` fails with an error prior to making an API request ([#7489](https://github.com/hashicorp/terraform/issues/7489))
* provider/aws: Add support to `aws_redshift_cluster` for `iam_roles` ([#6647](https://github.com/hashicorp/terraform/issues/6647))
* provider/aws: SQS use raw policy string if compact fails ([#6724](https://github.com/hashicorp/terraform/issues/6724))
* provider/aws: Set default description to "Managed by Terraform" ([#6104](https://github.com/hashicorp/terraform/issues/6104))
* provider/aws: Support for Redshift Cluster encryption using a KMS key ([#6712](https://github.com/hashicorp/terraform/issues/6712))
* provider/aws: Support tags for AWS redshift cluster ([#5356](https://github.com/hashicorp/terraform/issues/5356))
* provider/aws: Add `iam_arn` to aws_cloudfront_origin_access_identity ([#6955](https://github.com/hashicorp/terraform/issues/6955))
* provider/aws: Add `cross_zone_load_balancing` on `aws_elb` default to true ([#6897](https://github.com/hashicorp/terraform/issues/6897))
* provider/aws: Add support for `character_set_name` to `aws_db_instance` ([#4861](https://github.com/hashicorp/terraform/issues/4861))
* provider/aws: Add support for DB parameter group with RDS Cluster Instances (Aurora) ([#6865](https://github.com/hashicorp/terraform/issues/6865))
* provider/aws: Add `name_prefix` to `aws_iam_instance_profile` and `aws_iam_role` ([#6939](https://github.com/hashicorp/terraform/issues/6939))
* provider/aws: Allow authentication & credentials validation for federated IAM Roles and EC2 instance profiles ([#6536](https://github.com/hashicorp/terraform/issues/6536))
* provider/aws: Rename parameter_group_name to db_cluster_parameter_group_name ([#7083](https://github.com/hashicorp/terraform/issues/7083))
* provider/aws: `delegation_set_id` conflicts w/ `vpc_id` in `aws_route53_zone` as delegation sets can only be used for public zones ([#7213](https://github.com/hashicorp/terraform/issues/7213))
* provider/aws: Support Elastic Beanstalk scheduledaction ([#7376](https://github.com/hashicorp/terraform/issues/7376))
* provider/aws: Add support for NewInstancesProtectedFromScaleIn to `aws_autoscaling_group` ([#6490](https://github.com/hashicorp/terraform/issues/6490))
* provider/aws: Added support for `snapshot_identifier` parameter in aws_rds_cluster ([#7158](https://github.com/hashicorp/terraform/issues/7158))
* provider/aws: Add inplace edit/update DB Security Group Rule Ingress ([#7245](https://github.com/hashicorp/terraform/issues/7245))
* provider/aws: Added support for redshift destination to firehose delivery streams ([#7375](https://github.com/hashicorp/terraform/issues/7375))
* provider/aws: Allow `aws_redshift_security_group` ingress rules to change ([#5939](https://github.com/hashicorp/terraform/issues/5939))
* provider/aws: Add support for `encryption` and `kms_key_id` to `aws_ami` ([#7181](https://github.com/hashicorp/terraform/issues/7181))
* provider/aws: AWS prefix lists to enable security group egress to a VPC Endpoint ([#7511](https://github.com/hashicorp/terraform/issues/7511))
* provider/aws: Retry creation of IAM role depending on new IAM user ([#7324](https://github.com/hashicorp/terraform/issues/7324))
* provider/aws: Allow `port` on `aws_db_instance` to be updated ([#7441](https://github.com/hashicorp/terraform/issues/7441))
* provider/aws: Support `task_role_arn` on `aws_ecs_task_definition ([#7653](https://github.com/hashicorp/terraform/issues/7653))
* provider/aws: Support Tags on `aws_rds_cluster` ([#7695](https://github.com/hashicorp/terraform/issues/7695))
* provider/aws: Support kms_key_id for `aws_rds_cluster` ([#7662](https://github.com/hashicorp/terraform/issues/7662))
* provider/aws: Allow setting a `poll_interval` on `aws_elastic_beanstalk_environment` ([#7523](https://github.com/hashicorp/terraform/issues/7523))
* provider/aws: Add support for Kinesis streams shard-level metrics ([#7684](https://github.com/hashicorp/terraform/issues/7684))
* provider/aws: Support create / update greater than twenty db parameters in `aws_db_parameter_group` ([#7364](https://github.com/hashicorp/terraform/issues/7364))
* provider/aws: expose network interface id in `aws_instance` ([#6751](https://github.com/hashicorp/terraform/issues/6751))
* provider/aws: Adding passthrough behavior for API Gateway integration ([#7801](https://github.com/hashicorp/terraform/issues/7801))
* provider/clc: Fix optional server password ([#6414](https://github.com/hashicorp/terraform/issues/6414))
* provider/cloudstack: Add support for affinity groups to `cloudstack_instance` ([#6898](https://github.com/hashicorp/terraform/issues/6898))
* provider/cloudstack: Enable swapping of ACLs without having to rebuild the network tier ([#6741](https://github.com/hashicorp/terraform/issues/6741))
* provider/cloudstack: Add project support to `cloudstack_network_acl` and `cloudstack_network_acl_rule` ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/cloudstack: Add option to set `root_disk_size` to `cloudstack_instance` ([#7070](https://github.com/hashicorp/terraform/issues/7070))
* provider/cloudstack: Do no longer force a new `cloudstack_instance` resource when updating `user_data` ([#7074](https://github.com/hashicorp/terraform/issues/7074))
* provider/cloudstack: Add option to set `security_group_names` to `cloudstack_instance` ([#7240](https://github.com/hashicorp/terraform/issues/7240))
* provider/cloudstack: Add option to set `affinity_group_names` to `cloudstack_instance` ([#7242](https://github.com/hashicorp/terraform/issues/7242))
* provider/datadog: Add support for 'require full window' and 'locked' ([#6738](https://github.com/hashicorp/terraform/issues/6738))
* provider/docker: Docker Container DNS Setting Enhancements ([#7392](https://github.com/hashicorp/terraform/issues/7392))
* provider/docker: Add `destroy_grace_seconds` option to stop container before delete ([#7513](https://github.com/hashicorp/terraform/issues/7513))
* provider/docker: Add `pull_trigger` option to `docker_image` to trigger pulling layers of a given image ([#7000](https://github.com/hashicorp/terraform/issues/7000))
* provider/fastly: Add support for Cache Settings ([#6781](https://github.com/hashicorp/terraform/issues/6781))
* provider/fastly: Add support for Service Request Settings on `fastly_service_v1` resources ([#6622](https://github.com/hashicorp/terraform/issues/6622))
* provider/fastly: Add support for custom VCL configuration ([#6662](https://github.com/hashicorp/terraform/issues/6662))
* provider/google: Support optional uuid naming for Instance Template ([#6604](https://github.com/hashicorp/terraform/issues/6604))
* provider/openstack: Add support for client certificate authentication ([#6279](https://github.com/hashicorp/terraform/issues/6279))
* provider/vsphere: `vsphere_virtual_machine` added support for `mac address` on `network_interface` ([#6966](https://github.com/hashicorp/terraform/issues/6966))
* core: Correct the previous fix for a bug causing "attribute not found" messages during destroy, as it was insufficient ([#6599](https://github.com/hashicorp/terraform/issues/6599))
* core: Fix issue causing syntax errors interpolating count attribute when value passed between modules ([#6833](https://github.com/hashicorp/terraform/issues/6833))
* core: Fix "diffs didn't match during apply" error for computed sets ([#7205](https://github.com/hashicorp/terraform/issues/7205))
* core: Fix issue where `terraform init .` would truncate existing files ([#7273](https://github.com/hashicorp/terraform/issues/7273))
* core: Don't compare diffs between maps with computed values ([#7249](https://github.com/hashicorp/terraform/issues/7249))
* core: Don't copy existing files over themselves when fetching modules ([#7273](https://github.com/hashicorp/terraform/issues/7273))
* core: Always increment the state serial number when upgrading the version ([#7402](https://github.com/hashicorp/terraform/issues/7402))
* core: Fix a crash during eval when we're upgrading an empty state ([#7403](https://github.com/hashicorp/terraform/issues/7403))
* core: Honor the `-state-out` flag when applying with a plan file ([#7443](https://github.com/hashicorp/terraform/issues/7443))
* core: Fix a panic when a `terraform_remote_state` data source doesn't exist ([#7464](https://github.com/hashicorp/terraform/issues/7464))
* core: Fix issue where `ignore_changes` caused incorrect diffs on dependent resources ([#7563](https://github.com/hashicorp/terraform/issues/7563))
* provider/aws: Manual changes to `aws_codedeploy_deployment_group` resources are now detected ([#7530](https://github.com/hashicorp/terraform/issues/7530))
* provider/aws: Changing keys in `aws_dynamodb_table` correctly force new resources ([#6829](https://github.com/hashicorp/terraform/issues/6829))
* provider/aws: Fix a bug where CloudWatch alarms are created repeatedly if the user does not have permission to use the the DescribeAlarms operation ([#7227](https://github.com/hashicorp/terraform/issues/7227))
* provider/aws: Fix crash in `aws_elasticache_parameter_group` occuring following edits in the console ([#6687](https://github.com/hashicorp/terraform/issues/6687))
* provider/aws: Fix issue reattaching a VPN gateway to a VPC ([#6987](https://github.com/hashicorp/terraform/issues/6987))
* provider/aws: Fix issue with Root Block Devices and encrypted flag in Launch Configurations ([#6512](https://github.com/hashicorp/terraform/issues/6512))
* provider/aws: If more ENIs are attached to `aws_instance`, the one w/ DeviceIndex `0` is always used in context of `aws_instance` (previously unpredictable) ([#6761](https://github.com/hashicorp/terraform/issues/6761))
* provider/aws: Handle spurious failures in resourceAwsSecurityGroupRuleRead ([#7377](https://github.com/hashicorp/terraform/issues/7377))
* provider/aws: Make 'stage_name' required in api_gateway_deployment ([#6797](https://github.com/hashicorp/terraform/issues/6797))
* provider/aws: Mark Lambda function as gone when it's gone ([#6924](https://github.com/hashicorp/terraform/issues/6924))
* provider/aws: Trim trailing `.` from `name` in `aws_route53_record` resources to prevent spurious diffs ([#6592](https://github.com/hashicorp/terraform/issues/6592))
* provider/aws: Update Lambda functions on name change ([#7081](https://github.com/hashicorp/terraform/issues/7081))
* provider/aws: Updating state when `aws_sns_topic_subscription` is missing ([#6629](https://github.com/hashicorp/terraform/issues/6629))
* provider/aws: `aws_codedeploy_deployment_group` panic when setting `on_premises_instance_tag_filter` ([#6617](https://github.com/hashicorp/terraform/issues/6617))
* provider/aws: `aws_db_instance` now defaults `publicly_accessible` to false ([#7117](https://github.com/hashicorp/terraform/issues/7117))
* provider/aws: `aws_opsworks_application.app_source` SSH key is write-only ([#6649](https://github.com/hashicorp/terraform/issues/6649))
* provider/aws: Fix issue with Elastic Beanstalk and invalid settings ([#7222](https://github.com/hashicorp/terraform/issues/7222))
* provider/aws: Fix issue where aws_app_cookie_stickiness_policy fails on destroy if LoadBalancer doesn't exist ([#7166](https://github.com/hashicorp/terraform/issues/7166))
* provider/aws: Stickiness Policy exists, but isn't assigned to the ELB ([#7188](https://github.com/hashicorp/terraform/issues/7188))
* provider/aws: Fix issue with `manage_bundler` on `aws_opsworks_layers` ([#7219](https://github.com/hashicorp/terraform/issues/7219))
* provider/aws: Set Elastic Beanstalk stack name back to state ([#7445](https://github.com/hashicorp/terraform/issues/7445))
* provider/aws: Allow recreation of VPC Peering Connection when state is rejected ([#7466](https://github.com/hashicorp/terraform/issues/7466))
* provider/aws: Remove EFS File System from State when NotFound ([#7437](https://github.com/hashicorp/terraform/issues/7437))
* provider/aws: `aws_customer_gateway` refreshing from state on deleted state ([#7482](https://github.com/hashicorp/terraform/issues/7482))
* provider/aws: Retry finding `aws_route` after creating it ([#7463](https://github.com/hashicorp/terraform/issues/7463))
* provider/aws: Refresh CloudWatch Group from state on 404 ([#7576](https://github.com/hashicorp/terraform/issues/7576))
* provider/aws: Adding in additional retry logic due to latency with delete of `db_option_group` ([#7312](https://github.com/hashicorp/terraform/issues/7312))
* provider/aws: Safely get ELB values ([#7585](https://github.com/hashicorp/terraform/issues/7585))
* provider/aws: Fix bug for recurring plans on ec2-classic and vpc in beanstalk ([#6491](https://github.com/hashicorp/terraform/issues/6491))
* provider/aws: Bump rds_cluster timeout to 15 mins ([#7604](https://github.com/hashicorp/terraform/issues/7604))
* provider/aws: Fix ICMP fields in `aws_network_acl_rule` to allow ICMP code 0 (echo reply) to be configured ([#7669](https://github.com/hashicorp/terraform/issues/7669))
* provider/aws: Fix bug with Updating `aws_autoscaling_group``enabled_metrics` ([#7698](https://github.com/hashicorp/terraform/issues/7698))
* provider/aws: Ignore IOPS on non io1 AWS root_block_device ([#7783](https://github.com/hashicorp/terraform/issues/7783))
* provider/aws: Ignore missing ENI attachment when trying to detach ENI ([#7185](https://github.com/hashicorp/terraform/issues/7185))
* provider/azurerm: Fixes terraform crash when using SSH keys with `azurerm_virtual_machine` ([#6766](https://github.com/hashicorp/terraform/issues/6766))
* provider/azurerm: Fix a bug causing 'diffs do not match' on `azurerm_network_interface` resources ([#6790](https://github.com/hashicorp/terraform/issues/6790))
* provider/azurerm: Normalizes `availability_set_id` casing to avoid spurious diffs in `azurerm_virtual_machine` ([#6768](https://github.com/hashicorp/terraform/issues/6768))
* provider/azurerm: Add support for storage container name validation ([#6852](https://github.com/hashicorp/terraform/issues/6852))
* provider/azurerm: Remove storage containers and blobs when storage accounts are not found ([#6855](https://github.com/hashicorp/terraform/issues/6855))
* provider/azurerm: `azurerm_virtual_machine` fix `additional_unattend_rm` Windows config option ([#7105](https://github.com/hashicorp/terraform/issues/7105))
* provider/azurerm: `azurerm_dns_cname_record` can create CNAME records again ([#7113](https://github.com/hashicorp/terraform/issues/7113))
* provider/azurerm: `azurerm_network_security_group` now waits for the provisioning state of `ready` before proceeding ([#7307](https://github.com/hashicorp/terraform/issues/7307))
* provider/azurerm: `computer_name` is now required for `azurerm_virtual_machine` resources ([#7308](https://github.com/hashicorp/terraform/issues/7308))
* provider/azurerm: destroy azurerm_virtual_machine OS Disk VHD on deletion ([#7584](https://github.com/hashicorp/terraform/issues/7584))
* provider/azurerm: changing the name of an `azurerm_virtual_machine` now forces a new resource ([#7646](https://github.com/hashicorp/terraform/issues/7646))
* provider/azurerm: azurerm_storage_account now returns storage keys value instead of their names ([#7674](https://github.com/hashicorp/terraform/issues/7674))
* provider/azurerm: `azurerm_virtual_machine` computer_name now Required ([#7308](https://github.com/hashicorp/terraform/issues/7308))
* provider/azurerm: Change of `availability_set_id` on `azurerm_virtual_machine` should ForceNew ([#7650](https://github.com/hashicorp/terraform/issues/7650))
* provider/azurerm: Wait for `azurerm_storage_account` to be available ([#7329](https://github.com/hashicorp/terraform/issues/7329))
* provider/cloudflare: Fix issue upgrading CloudFlare Records created before v0.6.15 ([#6969](https://github.com/hashicorp/terraform/issues/6969))
* provider/cloudstack: Fix using `cloudstack_network_acl` within a project ([#6743](https://github.com/hashicorp/terraform/issues/6743))
* provider/cloudstack: Fix refresing `cloudstack_network_acl_rule` when the associated ACL is deleted ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/cloudstack: Fix refresing `cloudstack_port_forward` when the associated IP address is no longer associated ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/cloudstack: Fix creating `cloudstack_network` with offerings that do not support specifying IP ranges ([#7612](https://github.com/hashicorp/terraform/issues/7612))
* provider/digitalocean: Stop `digitocean_droplet` forcing new resource on uppercase region ([#7044](https://github.com/hashicorp/terraform/issues/7044))
* provider/digitalocean: Reassign Floating IP when droplet changes ([#7411](https://github.com/hashicorp/terraform/issues/7411))
* provider/google: Fix a bug causing an error attempting to delete an already-deleted `google_compute_disk` ([#6689](https://github.com/hashicorp/terraform/issues/6689))
* provider/mysql: Specifying empty provider credentials no longer causes a panic ([#7211](https://github.com/hashicorp/terraform/issues/7211))
* provider/openstack: Reassociate Floating IP on network changes ([#6579](https://github.com/hashicorp/terraform/issues/6579))
* provider/openstack: Ensure CIDRs Are Lower Case ([#6864](https://github.com/hashicorp/terraform/issues/6864))
* provider/openstack: Rebuild Instances On Network Changes ([#6844](https://github.com/hashicorp/terraform/issues/6844))
* provider/openstack: Firewall rules are applied in the correct order ([#7194](https://github.com/hashicorp/terraform/issues/7194))
* provider/openstack: Fix Security Group EOF Error when Adding / Removing Multiple Groups ([#7468](https://github.com/hashicorp/terraform/issues/7468))
* provider/openstack: Fixing boot volumes interfering with block storage volumes list ([#7649](https://github.com/hashicorp/terraform/issues/7649))
* provider/vsphere: `gateway` and `ipv6_gateway` are now read from `vsphere_virtual_machine` resources ([#6522](https://github.com/hashicorp/terraform/issues/6522))
* provider/vsphere: `ipv*_gateway` parameters won't force a new `vsphere_virtual_machine` ([#6635](https://github.com/hashicorp/terraform/issues/6635))
* provider/vsphere: adding a `vsphere_virtual_machine` migration ([#7023](https://github.com/hashicorp/terraform/issues/7023))
* provider/vsphere: Don't require vsphere debug paths to be set ([#7027](https://github.com/hashicorp/terraform/issues/7027))
* provider/vsphere: Fix bug where `enable_disk_uuid` was not set on `vsphere_virtual_machine` resources ([#7275](https://github.com/hashicorp/terraform/issues/7275))
* provider/vsphere: Make `vsphere_virtual_machine``product_key` optional ([#7410](https://github.com/hashicorp/terraform/issues/7410))
* provider/vsphere: Refreshing devices list after adding a disk or cdrom controller ([#7167](https://github.com/hashicorp/terraform/issues/7167))
* provider/vsphere: `vsphere_virtual_machine` no longer has to be powered on to delete ([#7206](https://github.com/hashicorp/terraform/issues/7206))
* provider/vSphere: Fixes the hasBootableVmdk flag when attaching multiple disks ([#7804](https://github.com/hashicorp/terraform/issues/7804))
* provisioner/remote-exec: Properly seed random script paths so they are not deterministic across runs ([#7413](https://github.com/hashicorp/terraform/issues/7413))
* provider/aws: Add support for request parameters to `api_gateway_method`&`api_gateway_integration` ([#6501](https://github.com/hashicorp/terraform/issues/6501))
* provider/aws: Add support for response parameters to `api_gateway_method_response`&`api_gateway_integration_response` ([#6344](https://github.com/hashicorp/terraform/issues/6344))
* provider/aws: Allow empty S3 config in Cloudfront Origin ([#6487](https://github.com/hashicorp/terraform/issues/6487))
* provider/aws: Improve error handling in IAM Server Certificates ([#6442](https://github.com/hashicorp/terraform/issues/6442))
* provider/aws: Use `sts:GetCallerIdentity` as additional method for getting AWS account ID ([#6385](https://github.com/hashicorp/terraform/issues/6385))
* provider/aws: `aws_redshift_cluster``automated_snapshot_retention_period` didn't allow 0 value ([#6537](https://github.com/hashicorp/terraform/issues/6537))
* provider/azurerm: Increase timeout for ARM Template deployments to 40 minutes ([#6319](https://github.com/hashicorp/terraform/issues/6319))
* provider/azurerm: Make `private_ip_address` an exported field on `azurerm_network_interface` ([#6538](https://github.com/hashicorp/terraform/issues/6538))
* provider/azurerm: Add support for `tags` to `azurerm_virtual_machine` ([#6556](https://github.com/hashicorp/terraform/issues/6556))
* provider/azurerm: Add `os_type` and `image_uri` in `azurerm_virtual_machine` ([#6553](https://github.com/hashicorp/terraform/issues/6553))
* provider/cloudflare: Add proxied option to `cloudflare_record` ([#5508](https://github.com/hashicorp/terraform/issues/5508))
* provider/docker: Add ability to keep docker image locally on terraform destroy ([#6376](https://github.com/hashicorp/terraform/issues/6376))
* provider/fastly: Add S3 Log Streaming to Fastly Service ([#6378](https://github.com/hashicorp/terraform/issues/6378))
* provider/fastly: Add Conditions to Fastly Service ([#6481](https://github.com/hashicorp/terraform/issues/6481))
* provider/github: Add support for Github Enterprise via base_url configuration option ([#6434](https://github.com/hashicorp/terraform/issues/6434))
* provider/triton: Add support for specifying network interfaces on `triton machine` resources ([#6418](https://github.com/hashicorp/terraform/issues/6418))
* provider/triton: Deleted firewall rules no longer prevent refresh ([#6529](https://github.com/hashicorp/terraform/issues/6529))
* provider/vsphere: Add `skip_customization` option to `vsphere_virtual_machine` resources ([#6355](https://github.com/hashicorp/terraform/issues/6355))
* provider/vsphere: Add ability to specify and mount bootable vmdk in `vsphere_virtual_machine` ([#6146](https://github.com/hashicorp/terraform/issues/6146))
* provider/vsphere: Add support for IPV6 to `vsphere_virtual_machine` ([#6457](https://github.com/hashicorp/terraform/issues/6457))
* provider/vsphere: Add support for `memory_reservation` to `vsphere_virtual_machine` ([#6036](https://github.com/hashicorp/terraform/issues/6036))
* provider/vsphere: Checking for empty diskPath in `vsphere_virtual_machine` before creating ([#6400](https://github.com/hashicorp/terraform/issues/6400))
* provider/vsphere: Support updates to vcpu and memory on `vsphere_virtual_machine` ([#6356](https://github.com/hashicorp/terraform/issues/6356))
* remote/s3: Logic for loading credentials now follows the same [conventions as AWS provider](https://www.terraform.io/docs/providers/aws/index.html#authentication) which means it also supports EC2 role auth and session token (e.g. assumed IAM Roles) ([#5270](https://github.com/hashicorp/terraform/issues/5270))
* core: Boolean values in diffs are normalized to `true` and `false`, eliminating some erroneous diffs ([#6499](https://github.com/hashicorp/terraform/issues/6499))
* core: Fix a bug causing "attribute not found" messages during destroy ([#6557](https://github.com/hashicorp/terraform/issues/6557))
* provider/aws: Allow account ID checks on EC2 instances & w/ federated accounts ([#5030](https://github.com/hashicorp/terraform/issues/5030))
* provider/aws: Fix an eventually consistent issue aws_security_group_rule and possible duplications ([#6325](https://github.com/hashicorp/terraform/issues/6325))
* provider/aws: Fix bug where `aws_elastic_beanstalk_environment` ignored `wait_for_ready_timeout` ([#6358](https://github.com/hashicorp/terraform/issues/6358))
* provider/aws: Fix bug where `aws_elastic_beanstalk_environment` update config template didn't work ([#6342](https://github.com/hashicorp/terraform/issues/6342))
* provider/aws: Fix issue in updating CloudFront distribution LoggingConfig ([#6407](https://github.com/hashicorp/terraform/issues/6407))
* provider/aws: Fix issue in upgrading AutoScaling Policy to use `min_adjustment_magnitude` ([#6440](https://github.com/hashicorp/terraform/issues/6440))
* provider/aws: Fix issue with KMS Alias keys and name prefixes ([#6328](https://github.com/hashicorp/terraform/issues/6328))
* provider/aws: Fix issue with encrypted snapshots of block devices in `aws_launch_configuration` resources ([#6452](https://github.com/hashicorp/terraform/issues/6452))
* provider/aws: Fix read of `aws_cloudwatch_log_group` after an update is applied ([#6384](https://github.com/hashicorp/terraform/issues/6384))
* provider/aws: Fix updating `number_of_nodes` on `aws_redshift_cluster` ([#6333](https://github.com/hashicorp/terraform/issues/6333))
* provider/aws: Omit `aws_cloudfront_distribution` custom_error fields when not explicitly set ([#6382](https://github.com/hashicorp/terraform/issues/6382))
* provider/aws: Refresh state on `aws_sqs_queue` not found ([#6381](https://github.com/hashicorp/terraform/issues/6381))
* provider/aws: Respect `selection_pattern` in `aws_api_gateway_integration_response` (previously ignored field) ([#5893](https://github.com/hashicorp/terraform/issues/5893))
* provider/aws: `aws_cloudfront_distribution` resources now require the `cookies` argument ([#6505](https://github.com/hashicorp/terraform/issues/6505))
* provider/aws: `aws_route` crash when used with `aws_vpc_endpoint` ([#6338](https://github.com/hashicorp/terraform/issues/6338))
* provider/aws: validate `cluster_id` length for `aws_elasticache_cluster` ([#6330](https://github.com/hashicorp/terraform/issues/6330))
* provider/azurerm: `ssh_keys` can now be set for `azurerm_virtual_machine` resources, allowing provisioning ([#6541](https://github.com/hashicorp/terraform/issues/6541))
* provider/azurerm: Fix issue that updating `azurerm_virtual_machine` was failing due to empty adminPassword ([#6528](https://github.com/hashicorp/terraform/issues/6528))
* provider/azurerm: `storage_data_disk` settings now work correctly on `azurerm_virtual_machine` resources ([#6543](https://github.com/hashicorp/terraform/issues/6543))
* provider/cloudflare: can manage apex records ([#6449](https://github.com/hashicorp/terraform/issues/6449))
* provider/cloudflare: won't refresh with incorrect record if names match ([#6449](https://github.com/hashicorp/terraform/issues/6449))
* provider/datadog: `notify_no_data` and `no_data_timeframe` are set correctly for `datadog_monitor` resources ([#6509](https://github.com/hashicorp/terraform/issues/6509))
* provider/docker: Fix crash when using empty string in the `command` list in `docker_container` resources ([#6424](https://github.com/hashicorp/terraform/issues/6424))
* provider/vsphere: Memory reservations are now set correctly in `vsphere_virtual_machine` resources ([#6482](https://github.com/hashicorp/terraform/issues/6482))
*`aws_instance` - if you still use `security_groups` field for SG IDs - i.e. inside VPC, this will generate diffs during `plan` and `apply` will **recreate** the resource. Terraform expects IDs (VPC SGs) inside `vpc_security_group_ids`.
* command/apply: Output will now show periodic status updates of slow resources. ([#6163](https://github.com/hashicorp/terraform/issues/6163))
* core: Variables passed between modules are now type checked ([#6185](https://github.com/hashicorp/terraform/issues/6185))
* core: Smaller release binaries by stripping debug information ([#6238](https://github.com/hashicorp/terraform/issues/6238))
* provider/aws: Add support for Step Scaling in `aws_autoscaling_policy` ([#4277](https://github.com/hashicorp/terraform/issues/4277))
* provider/aws: Add support for `cname_prefix` to `aws_elastic_beanstalk_environment` resource ([#5966](https://github.com/hashicorp/terraform/issues/5966))
* provider/aws: Add support for trigger_configuration to `aws_codedeploy_deployment_group` ([#5599](https://github.com/hashicorp/terraform/issues/5599))
* provider/aws: Adding outputs for elastic_beanstalk_environment resource ([#5915](https://github.com/hashicorp/terraform/issues/5915))
* provider/aws: Adds `wait_for_ready_timeout` option to `aws_elastic_beanstalk_environment` ([#5967](https://github.com/hashicorp/terraform/issues/5967))
* provider/aws: Allow `aws_db_subnet_group` description to be updated ([#5921](https://github.com/hashicorp/terraform/issues/5921))
* provider/aws: Allow multiple EIPs to associate to single ENI ([#6070](https://github.com/hashicorp/terraform/issues/6070))
* provider/aws: Change `aws_elb` access_logs to list type ([#5065](https://github.com/hashicorp/terraform/issues/5065))
* provider/aws: Check that InternetGateway exists before returning from creation ([#6105](https://github.com/hashicorp/terraform/issues/6105))
* provider/aws: Don't Base64-encode EC2 userdata if it is already Base64 encoded ([#6140](https://github.com/hashicorp/terraform/issues/6140))
* provider/aws: Making the Cloudwatch Event Rule Target `target_id` optional ([#5787](https://github.com/hashicorp/terraform/issues/5787))
* provider/aws: Timeouts for `elasticsearch_domain` are increased ([#5910](https://github.com/hashicorp/terraform/issues/5910))
* provider/aws: `aws_codecommit_repository` set `default_branch` only if defined ([#5904](https://github.com/hashicorp/terraform/issues/5904))
* provider/aws: `aws_redshift_cluster` allows usernames with underscore in it ([#5935](https://github.com/hashicorp/terraform/issues/5935))
* provider/aws: normalise json for `aws_sns_topic` ([#6089](https://github.com/hashicorp/terraform/issues/6089))
* provider/aws: normalize json for `aws_cloudwatch_event_rule` ([#6025](https://github.com/hashicorp/terraform/issues/6025))
* provider/aws: increase timeout for aws_redshift_cluster ([#6305](https://github.com/hashicorp/terraform/issues/6305))
* provider/aws: Opsworks layers now support `custom_json` argument ([#4272](https://github.com/hashicorp/terraform/issues/4272))
* provider/aws: Added migration for `tier` attribute in `aws_elastic_beanstalk_environment` ([#6167](https://github.com/hashicorp/terraform/issues/6167))
* provider/aws: Use resource.Retry for route creation and deletion ([#6225](https://github.com/hashicorp/terraform/issues/6225))
* provider/aws: Add support S3 Bucket Lifecycle Rule ([#6220](https://github.com/hashicorp/terraform/issues/6220))
* provider/clc: Override default `account` alias in provider config ([#5785](https://github.com/hashicorp/terraform/issues/5785))
* provider/cloudstack: Deprecate `ipaddress` in favour of `ip_address` in all resources ([#6010](https://github.com/hashicorp/terraform/issues/6010))
* provider/cloudstack: Deprecate allowing names (instead of IDs) for parameters that reference other resources ([#6123](https://github.com/hashicorp/terraform/issues/6123))
* provider/datadog: Add heredoc support to message, escalation_message, and query ([#5788](https://github.com/hashicorp/terraform/issues/5788))
* provider/docker: Add support for docker run --user option ([#5300](https://github.com/hashicorp/terraform/issues/5300))
* provider/github: Add support for privacy to `github_team` ([#6116](https://github.com/hashicorp/terraform/issues/6116))
* provider/google: Accept GOOGLE_CLOUD_KEYFILE_JSON env var for credentials ([#6007](https://github.com/hashicorp/terraform/issues/6007))
* provider/google: Add "project" argument and attribute to all GCP compute resources which inherit from the provider's value ([#6112](https://github.com/hashicorp/terraform/issues/6112))
* provider/google: Make "project" attribute on provider configuration optional ([#6112](https://github.com/hashicorp/terraform/issues/6112))
* provider/google: Read more common configuration values from the environment and clarify precedence ordering ([#6114](https://github.com/hashicorp/terraform/issues/6114))
* provider/google: `addons_config` and `subnetwork` added as attributes to `google_container_cluster` ([#5871](https://github.com/hashicorp/terraform/issues/5871))
* provider/fastly: Add support for Request Headers ([#6197](https://github.com/hashicorp/terraform/issues/6197))
* provider/fastly: Add support for Gzip rules ([#6247](https://github.com/hashicorp/terraform/issues/6247))
* provider/openstack: Add value_specs argument and attribute for routers ([#4898](https://github.com/hashicorp/terraform/issues/4898))
* provider/openstack: Allow subnets with no gateway ([#6060](https://github.com/hashicorp/terraform/issues/6060))
* provider/postgresql: New `ssl_mode` argument allowing different SSL usage tradeoffs ([#6008](https://github.com/hashicorp/terraform/issues/6008))
* provider/vsphere: Support for linked clones and Windows-specific guest config options ([#6087](https://github.com/hashicorp/terraform/issues/6087))
* provider/vsphere: Checking for Powered Off State before `vsphere_virtual_machine` deletion ([#6283](https://github.com/hashicorp/terraform/issues/6283))
* provider/vsphere: Support mounting ISO images to virtual cdrom drives ([#4243](https://github.com/hashicorp/terraform/issues/4243))
* provider/vsphere: Fix missing ssh connection info ([#4283](https://github.com/hashicorp/terraform/issues/4283))
* provider/google: Deprecate unused "region" attribute in `global_forwarding_rule`; this attribute was never used anywhere in the computation of the resource ([#6112](https://github.com/hashicorp/terraform/issues/6112))
* provider/cloudstack: Add group attribute to `cloudstack_instance` resource ([#6023](https://github.com/hashicorp/terraform/issues/6023))
* provider/azurerm: Provider meaningful error message when credentials not correct ([#6290](https://github.com/hashicorp/terraform/issues/6290))
* provider/cloudstack: Improve support for using projects ([#6282](https://github.com/hashicorp/terraform/issues/6282))
* provider/aws: Fix issue with changing iops when also changing storage type to io1 on RDS ([#5676](https://github.com/hashicorp/terraform/issues/5676))
* provider/aws: Fix issue with retrying deletion of Network ACLs ([#5954](https://github.com/hashicorp/terraform/issues/5954))
* provider/aws: Fix potential crash when receiving malformed `aws_route` API responses ([#5867](https://github.com/hashicorp/terraform/issues/5867))
* provider/aws: Guard against empty responses from Lambda Permissions ([#5838](https://github.com/hashicorp/terraform/issues/5838))
* provider/aws: Normalize and compact SQS Redrive, Policy JSON ([#5888](https://github.com/hashicorp/terraform/issues/5888))
* provider/aws: Remove CloudTrail Trail from state if not found ([#6024](https://github.com/hashicorp/terraform/issues/6024))
* provider/aws: Fix crash in AWS S3 Bucket when website index/error is empty ([#6269](https://github.com/hashicorp/terraform/issues/6269))
* provider/aws: Report better error message in `aws_route53_record` when `set_identifier` is required ([#5777](https://github.com/hashicorp/terraform/issues/5777))
* provider/aws: Show human-readable error message when failing to read an EBS volume ([#6038](https://github.com/hashicorp/terraform/issues/6038))
* provider/aws: set ASG `health_check_grace_period` default to 300 ([#5830](https://github.com/hashicorp/terraform/issues/5830))
* provider/aws: Fix issue with with Opsworks and empty Custom Cook Book sources ([#6078](https://github.com/hashicorp/terraform/issues/6078))
* provider/aws: wait for IAM instance profile to propagate when creating Opsworks stacks ([#6049](https://github.com/hashicorp/terraform/issues/6049))
* provider/aws: Don't read back `aws_opsworks_stack` cookbooks source password ([#6203](https://github.com/hashicorp/terraform/issues/6203))
* provider/aws: Resolves DefaultOS and ConfigurationManager conflict on `aws_opsworks_stack` ([#6244](https://github.com/hashicorp/terraform/issues/6244))
* provider/aws: Renaming `aws_elastic_beanstalk_configuration_template``option_settings` to `setting` ([#6043](https://github.com/hashicorp/terraform/issues/6043))
* provider/aws: provider/aws: Refresh state on `aws_directory_service_directory` not found ([#6294](https://github.com/hashicorp/terraform/issues/6294))
* provider/aws: `aws_elb``cross_zone_load_balancing` is not refreshed in the state file ([#6295](https://github.com/hashicorp/terraform/issues/6295))
* core: provisioners connecting via WinRM now respect HTTPS settings ([#5761](https://github.com/hashicorp/terraform/issues/5761))
* provider/aws: `aws_db_instance` now makes `identifier` optional and generates a unique ID when it is omitted ([#5723](https://github.com/hashicorp/terraform/issues/5723))
* provider/aws: `aws_redshift_cluster` now allows`publicly_accessible` to be modified ([#5721](https://github.com/hashicorp/terraform/issues/5721))
* provider/aws: `aws_kms_alias` now allows name to be auto-generated with a `name_prefix` ([#5594](https://github.com/hashicorp/terraform/issues/5594))
* core: Color output is now shown correctly when running Terraform on Windows ([#5718](https://github.com/hashicorp/terraform/issues/5718))
* core: HEREDOCs can now be indented in line with configuration using `<<-` and hanging indent is removed ([#5740](https://github.com/hashicorp/terraform/issues/5740))
* core: Invalid HCL syntax of nested object blocks no longer causes a crash ([#5740](https://github.com/hashicorp/terraform/issues/5740))
* core: Local directory-based modules now use junctions instead of symbolic links on Windows ([#5739](https://github.com/hashicorp/terraform/issues/5739))
* core: Modules sourced from a Mercurial repository now work correctly on Windows ([#5739](https://github.com/hashicorp/terraform/issues/5739))
* core: Address some issues with ignore_changes ([#5635](https://github.com/hashicorp/terraform/issues/5635))
* core: Add a lock to fix an interpolation issue caught by the Go 1.6 concurrent map access detector ([#5772](https://github.com/hashicorp/terraform/issues/5772))
* provider/aws: Fix crash when an `aws_rds_cluster_instance` is removed outside of Terraform ([#5717](https://github.com/hashicorp/terraform/issues/5717))
* provider/aws: `aws_cloudformation_stack` use `timeout_in_minutes` for retry timeout to prevent unecessary timeouts ([#5712](https://github.com/hashicorp/terraform/issues/5712))
* provider/aws: `aws_lambda_function` resources no longer error on refresh if deleted externally to Terraform ([#5668](https://github.com/hashicorp/terraform/issues/5668))
* provider/aws: `aws_vpn_connection` resources deleted via the console on longer cause a crash ([#5747](https://github.com/hashicorp/terraform/issues/5747))
* provider/aws: Fix crasher in Elastic Beanstalk Configuration when using options ([#5756](https://github.com/hashicorp/terraform/issues/5756))
* provider/aws: Fix issue preventing `aws_opsworks_stck` from working with Windows set as the OS ([#5724](https://github.com/hashicorp/terraform/issues/5724))
* provider/digitalocean: `digitalocean_ssh_key` resources no longer cause a panic if there is no network connectivity ([#5748](https://github.com/hashicorp/terraform/issues/5748))
* provider/google: Default description `google_dns_managed_zone` resources to "Managed By Terraform" ([#5428](https://github.com/hashicorp/terraform/issues/5428))
* provider/google: Fix error message on invalid instance URL for `google_compute_instance_group` ([#5715](https://github.com/hashicorp/terraform/issues/5715))
* provider/vsphere: provide `host` to provisioner connections ([#5558](https://github.com/hashicorp/terraform/issues/5558))
* provisioner/remote-exec: Address race condition introduced with script cleanup step introduced in 0.6.13 ([#5751](https://github.com/hashicorp/terraform/issues/5751))
* provider/aws: `aws_s3_bucket_object` field `etag` is now trimming off quotes (returns raw MD5 hash) ([#5305](https://github.com/hashicorp/terraform/issues/5305))
* provider/aws: `aws_autoscaling_group` now supports metrics collection, so a diff installing the default value of `1Minute` for the `metrics_granularity` field is expected. This diff should resolve in the next `terraform apply` w/ no AWS API calls ([#4688](https://github.com/hashicorp/terraform/issues/4688))
* provider/consul: `consul_keys``key` blocks now respect `delete` flag for removing individual blocks. Previously keys would be deleted only when the entire resource was removed.
* provider/google: `next_hop_network` on `google_compute_route` is now read-only, to mirror the behavior in the official docs ([#5564](https://github.com/hashicorp/terraform/issues/5564))
* state/remote/http: PUT requests for this backend will now have `Content-Type: application/json` instead of `application/octet-stream` ([#5499](https://github.com/hashicorp/terraform/issues/5499))
* provider/aws: Add `repository_link` as a computed field for `aws_ecr_repository` ([#5524](https://github.com/hashicorp/terraform/issues/5524))
* provider/aws: Add ability to update Route53 zone comments ([#5318](https://github.com/hashicorp/terraform/issues/5318))
* provider/aws: Add support for Metrics Collection to `aws_autoscaling_group` ([#4688](https://github.com/hashicorp/terraform/issues/4688))
* provider/aws: Add support for `description` to `aws_network_interface` ([#5523](https://github.com/hashicorp/terraform/issues/5523))
* provider/aws: Add support for `storage_encrypted` to `aws_rds_cluster` ([#5520](https://github.com/hashicorp/terraform/issues/5520))
* provider/aws: Add support for routing rules on `aws_s3_bucket` resources ([#5327](https://github.com/hashicorp/terraform/issues/5327))
* provider/aws: Enable updates & versioning for `aws_s3_bucket_object` ([#5305](https://github.com/hashicorp/terraform/issues/5305))
* provider/aws: Guard against Nil Reference in Redshift Endpoints ([#5593](https://github.com/hashicorp/terraform/issues/5593))
* provider/aws: Lambda S3 object version defaults to `$LATEST` if unspecified ([#5370](https://github.com/hashicorp/terraform/issues/5370))
* provider/aws: Retry DB Creation on IAM propigation error ([#5515](https://github.com/hashicorp/terraform/issues/5515))
* provider/aws: Support KMS encryption of S3 objects ([#5453](https://github.com/hashicorp/terraform/issues/5453))
* provider/aws: `aws_autoscaling_lifecycle_hook` now have `notification_target_arn` and `role_arn` as optional ([#5616](https://github.com/hashicorp/terraform/issues/5616))
* provider/aws: `aws_ecs_service` validates number of `load_balancer`s before creation/updates ([#5605](https://github.com/hashicorp/terraform/issues/5605))
* provider/aws: send Terraform version in User-Agent ([#5621](https://github.com/hashicorp/terraform/issues/5621))
* provider/cloudflare: Change `cloudflare_record` type to ForceNew ([#5353](https://github.com/hashicorp/terraform/issues/5353))
* provider/consul: `consul_keys` now detects drift and supports deletion of individual `key` blocks ([#5210](https://github.com/hashicorp/terraform/issues/5210))
* provider/digitalocean: Guard against Nil reference in `digitalocean_droplet` ([#5588](https://github.com/hashicorp/terraform/issues/5588))
* provider/docker: Add support for `unless-stopped` to docker container `restart_policy` ([#5337](https://github.com/hashicorp/terraform/issues/5337))
* provider/google: Mark `next_hop_network` as read-only on `google_compute_route` ([#5564](https://github.com/hashicorp/terraform/issues/5564))
* provider/google: Validate VPN tunnel peer_ip at plan time ([#5501](https://github.com/hashicorp/terraform/issues/5501))
* provider/openstack: Add Support for Domain ID and Domain Name environment variables ([#5355](https://github.com/hashicorp/terraform/issues/5355))
* provider/openstack: Add support for instances to have multiple ephemeral disks. ([#5131](https://github.com/hashicorp/terraform/issues/5131))
* provider/openstack: Re-Add server.AccessIPv4 and server.AccessIPv6 ([#5366](https://github.com/hashicorp/terraform/issues/5366))
* provider/vsphere: Add support for disk init types ([#4284](https://github.com/hashicorp/terraform/issues/4284))
* provisioner/remote-exec: Clear out scripts after uploading ([#5577](https://github.com/hashicorp/terraform/issues/5577))
* state/remote/http: Change content type of PUT requests to the more appropriate `application/json` ([#5499](https://github.com/hashicorp/terraform/issues/5499))
* core: Disallow negative indices in the element() interpolation function, preventing crash ([#5263](https://github.com/hashicorp/terraform/issues/5263))
* core: Fix issue that caused tainted resource destroys to be improperly filtered out when using -target and a plan file ([#5516](https://github.com/hashicorp/terraform/issues/5516))
* core: Fix several issues with retry logic causing spurious "timeout while waiting for state to become ..." errors and unnecessary retry loops ([#5460](https://github.com/hashicorp/terraform/issues/5460)), ([#5538](https://github.com/hashicorp/terraform/issues/5538)), ([#5543](https://github.com/hashicorp/terraform/issues/5543)), ([#5553](https://github.com/hashicorp/terraform/issues/5553))
* core: Includes upstream HCL fix to properly detect unbalanced braces and throw an error ([#5400](https://github.com/hashicorp/terraform/issues/5400))
* provider/aws: Fix EC2 Classic SG Rule issue when referencing rules by name ([#5533](https://github.com/hashicorp/terraform/issues/5533))
* provider/aws: Fix `aws_cloudformation_stack` update for `parameters`&`capabilities` if unmodified ([#5603](https://github.com/hashicorp/terraform/issues/5603))
* provider/aws: Fix a bug where AWS Kinesis Stream includes closed shards in the shard_count ([#5401](https://github.com/hashicorp/terraform/issues/5401))
* provider/aws: Fix a bug where ElasticSearch Domain tags were not being set correctly ([#5361](https://github.com/hashicorp/terraform/issues/5361))
* provider/aws: Fix a bug where `aws_route` would show continual changes in the plan when not computed ([#5321](https://github.com/hashicorp/terraform/issues/5321))
* provider/aws: Fix a bug where `publicly_assessible` wasn't being set to state in `aws_db_instance` ([#5535](https://github.com/hashicorp/terraform/issues/5535))
* provider/aws: Fix a bug where listener protocol on `aws_elb` resources was case insensitive ([#5376](https://github.com/hashicorp/terraform/issues/5376))
* provider/aws: Fix a bug which caused panics creating rules on security groups in EC2 Classic ([#5329](https://github.com/hashicorp/terraform/issues/5329))
* provider/aws: Fix crash when `aws_lambda_function` VpcId is nil ([#5182](https://github.com/hashicorp/terraform/issues/5182))
* provider/aws: `aws_lambda_function` can be properly updated, either via `s3_object_version` or via `filename`&`source_code_hash` as described in docs ([#5239](https://github.com/hashicorp/terraform/issues/5239))
* provider/google: Fix managed instance group preemptible instance creation ([#4834](https://github.com/hashicorp/terraform/issues/4834))
* provider/openstack: Account for a 403 reply when os-tenant-networks is disabled ([#5432](https://github.com/hashicorp/terraform/issues/5432))
* provider/openstack: Fix crashing during certain network updates in instances ([#5365](https://github.com/hashicorp/terraform/issues/5365))
* provider/openstack: Fix create/delete statuses in load balancing resources ([#5557](https://github.com/hashicorp/terraform/issues/5557))
* provider/openstack: Fix race condition between instance deletion and volume detachment ([#5359](https://github.com/hashicorp/terraform/issues/5359))
* provider/template: Warn when `template` attribute specified as path ([#5563](https://github.com/hashicorp/terraform/issues/5563))
* core: Backend names are now down cased during `init` in the same manner as `remote config` ([#5012](https://github.com/hashicorp/terraform/issues/5012))
* core: Upgrade resource name validation warning to an error as planned ([#5272](https://github.com/hashicorp/terraform/issues/5272))
* core: Fix bug where `ignore_changes` could produce "diffs didn't match during apply" errors ([#4965](https://github.com/hashicorp/terraform/issues/4965))
* core: Improve handling of Provisioners in the graph, fixing "Provisioner already initialized" errors ([#4877](https://github.com/hashicorp/terraform/issues/4877))
from working properly with CBD resources ([#5096](https://github.com/hashicorp/terraform/issues/5096))
* core: Error instead of panic on self var in wrong scope ([#5273](https://github.com/hashicorp/terraform/issues/5273))
* provider/aws: Fix Copy of Tags to DB Instance when created from Snapshot ([#5197](https://github.com/hashicorp/terraform/issues/5197))
* provider/aws: Fix DynamoDB Table Refresh to ensure deleted tables are removed from state ([#4943](https://github.com/hashicorp/terraform/issues/4943))
* provider/aws: Fix issue applying security group changes in EC2 Classic RDS for aws_db_instance ([#4969](https://github.com/hashicorp/terraform/issues/4969))
* provider/aws: Fix reading auto scaling group availability zones ([#5044](https://github.com/hashicorp/terraform/issues/5044))
* provider/aws: Fix reading auto scaling group load balancers ([#5045](https://github.com/hashicorp/terraform/issues/5045))
* provider/aws: Fix `aws_redshift_cluster` to allow `publicly_accessible` to be false ([#5262](https://github.com/hashicorp/terraform/issues/5262))
* provider/aws: Wait longer for internet gateways to detach ([#5120](https://github.com/hashicorp/terraform/issues/5120))
* provider/aws: Fix issue reading auto scaling group termination policies ([#5101](https://github.com/hashicorp/terraform/issues/5101))
* provider/cloudflare: `ttl` no longer shows a change on each plan on `cloudflare_record` resources ([#5042](https://github.com/hashicorp/terraform/issues/5042))
* provider/docker: Fix the default docker_host value ([#5088](https://github.com/hashicorp/terraform/issues/5088))
* provider/google: Fix backend service max_utilization attribute ([#5075](https://github.com/hashicorp/terraform/issues/5075))
* provider/google: Fix reading of `google_compute_vpn_gateway` without an explicit ([#5125](https://github.com/hashicorp/terraform/issues/5125))
* provider/google: Fix crash when setting `ack_deadline_seconds` on `google_pubsub_subscription` ([#5110](https://github.com/hashicorp/terraform/issues/5110))
* provider/openstack: Fix crash when `access_network` was not defined in instances ([#4966](https://github.com/hashicorp/terraform/issues/4966))
* provider/powerdns: Fix refresh of `powerdns_record` no longer fails if the record name contains a `-` ([#5228](https://github.com/hashicorp/terraform/issues/5228))
* provider/vcd: Wait for DHCP assignment when creating `vcd_vapp` resources with no static IP assignment ([#5195](https://github.com/hashicorp/terraform/issues/5195))
* **New builtin function:** `trimspace` for trimming whitespaces ([#4910](https://github.com/hashicorp/terraform/issues/4910))
* **New builtin function:** `base64sha256` for base64 encoding raw sha256 sum of a given string ([#4899](https://github.com/hashicorp/terraform/issues/4899))
* provider/template: Remove unnecessary mime-type validation from `template_cloudinit_config` resources ([#4873](https://github.com/hashicorp/terraform/issues/4873))
* provider/template: Correct spelling of "Boundary" in the part separator of rendered `template_cloudinit_config` resources ([#4873](https://github.com/hashicorp/terraform/issues/4873))
* provider/aws: Provide a better message if no AWS creds are found ([#4869](https://github.com/hashicorp/terraform/issues/4869))
* provider/aws: Fix regression with VPCs and ClassicLink for regions that do not support it ([#4879](https://github.com/hashicorp/terraform/issues/4879))
* provider/aws: Change VPC ClassicLink to be computed ([#4933](https://github.com/hashicorp/terraform/issues/4933))
* provider/aws: Fix SNS Topic Refresh to ensure deleted topics are removed from state ([#4891](https://github.com/hashicorp/terraform/issues/4891))
* provider/aws: Refactor Route53 record to fix regression in deleting records created in previous versions of Terraform ([#4892](https://github.com/hashicorp/terraform/issues/4892))
* provider/azurerm: Fix panic if no creds supplied ([#4902](https://github.com/hashicorp/terraform/issues/4902))
* provider/openstack: Changing the port resource to mark the ip_address as optional ([#4850](https://github.com/hashicorp/terraform/issues/4850))
* provider/docker: Catch potential custom network errors in docker ([#4918](https://github.com/hashicorp/terraform/issues/4918))
* The `-module-depth` flag available on `plan`, `apply`, `show`, and `graph` now defaults to `-1`, causing
resources within modules to be expanded in command output. This is only a cosmetic change; it does not affect
any behavior.
* This release includes a bugfix for `$${}` interpolation escaping. These strings are now properly converted to `${}`
during interpolation. This may cause diffs on existing configurations in certain cases.
* Users of `consul_keys` should note that the `value` sub-attribute of `key` will no longer be updated with the remote value of the key. It should be only used to _set_ a key in Consul K/V. To reference key values, use the `var` attribute.
* The 0.6.9 release contained a regression in `aws_autoscaling_group` capacity waiting behavior for configs where `min_elb_capacity != desired_capacity` or `min_size != desired_capacity`. This release remedies that regression by un-deprecating `min_elb_capacity` and restoring the prior behavior.
* Users of `aws_security_group` may notice new diffs in initial plans with 0.6.10 due to a bugfix that fixes drift detection on nested security group rules. These new diffs should reflect the actual state of the resources, which Terraform previously was unable to see.
* core: Add `sha256()` interpolation function ([#4704](https://github.com/hashicorp/terraform/issues/4704))
* core: Validate lifecycle keys to show helpful error messages whe they are mistypes ([#4745](https://github.com/hashicorp/terraform/issues/4745))
* core: Default `module-depth` parameter to `-1`, which expands resources within modules in command output ([#4763](https://github.com/hashicorp/terraform/issues/4763))
* core: Variable types may now be specified explicitly using the `type` argument ([#4795](https://github.com/hashicorp/terraform/issues/4795))
* provider/aws: Add new parameters `az_mode` and `availability_zone(s)` in ElastiCache ([#4631](https://github.com/hashicorp/terraform/issues/4631))
* provider/aws: Allow ap-northeast-2 (Seoul) as valid region ([#4637](https://github.com/hashicorp/terraform/issues/4637))
* provider/aws: Added support for `encrypted` on `ebs_block_devices` in Launch Configurations ([#4481](https://github.com/hashicorp/terraform/issues/4481))
* provider/aws: Retry Listener Creation for ELBs ([#4825](https://github.com/hashicorp/terraform/issues/4825))
and Directory Connectors ([#4388](https://github.com/hashicorp/terraform/issues/4388))
* provider/aws: Mark some `aws_db_instance` fields as optional ([#3138](https://github.com/hashicorp/terraform/issues/3138))
* provider/digitalocean: Add support for reassigning `digitalocean_floating_ip` resources ([#4476](https://github.com/hashicorp/terraform/issues/4476))
* provider/dme: Add support for Global Traffic Director locations on `dme_record` resources ([#4305](https://github.com/hashicorp/terraform/issues/4305))
* provider/docker: Add support for adding host entries on `docker_container` resources ([#3463](https://github.com/hashicorp/terraform/issues/3463))
* provider/docker: Add support for mounting named volumes on `docker_container` resources ([#4480](https://github.com/hashicorp/terraform/issues/4480))
* provider/google: Add content field to bucket object ([#3893](https://github.com/hashicorp/terraform/issues/3893))
* provider/google: Add support for `named_port` blocks on `google_compute_instance_group_manager` resources ([#4605](https://github.com/hashicorp/terraform/issues/4605))
* provider/openstack: Add "personality" support to instance resource ([#4623](https://github.com/hashicorp/terraform/issues/4623))
* provider/packet: Handle external state changes for Packet resources gracefully ([#4676](https://github.com/hashicorp/terraform/issues/4676))
* provider/tls: `tls_private_key` now exports attributes with public key in both PEM and OpenSSH format ([#4606](https://github.com/hashicorp/terraform/issues/4606))
* provider/vdc: Add `allow_unverified_ssl` for connections to vCloud API ([#4811](https://github.com/hashicorp/terraform/issues/4811))
* state/remote: Allow KMS Key Encryption to be used with S3 backend ([#2903](https://github.com/hashicorp/terraform/issues/2903))
* core: Write planfile even on empty plans ([#4766](https://github.com/hashicorp/terraform/issues/4766))
* core: Add validation error when output is missing value field ([#4762](https://github.com/hashicorp/terraform/issues/4762))
* core: Fix improper handling of orphan resources when targeting ([#4574](https://github.com/hashicorp/terraform/issues/4574))
* core: Properly handle references to computed set attributes ([#4840](https://github.com/hashicorp/terraform/issues/4840))
* config: Detect a specific JSON edge case and show a helpful workaround ([#4746](https://github.com/hashicorp/terraform/issues/4746))
* provider/openstack: Ensure valid Security Group Rule attribute combination ([#4466](https://github.com/hashicorp/terraform/issues/4466))
* provider/openstack: Don't put fixed_ip in port creation request if not defined ([#4617](https://github.com/hashicorp/terraform/issues/4617))
* provider/google: Clarify SQL Database Instance recent name restriction ([#4577](https://github.com/hashicorp/terraform/issues/4577))
* provider/google: Split Instance network interface into two fields ([#4265](https://github.com/hashicorp/terraform/issues/4265))
* provider/aws: Error with empty list item on security group ([#4140](https://github.com/hashicorp/terraform/issues/4140))
* provider/aws: Fix issue with detecting drift in AWS Security Groups rules ([#4779](https://github.com/hashicorp/terraform/issues/4779))
* provider/aws: Trap Instance error from mismatched SG IDs and Names ([#4240](https://github.com/hashicorp/terraform/issues/4240))
* provider/aws: EBS optimised to force new resource in AWS Instance ([#4627](https://github.com/hashicorp/terraform/issues/4627))
* provider/aws: Wait for NACL rule to be visible ([#4734](https://github.com/hashicorp/terraform/issues/4734))
* provider/aws: `default_result` on `aws_autoscaling_lifecycle_hook` resources is now computed ([#4695](https://github.com/hashicorp/terraform/issues/4695))
* core: Change set internals for performance improvements ([#3992](https://github.com/hashicorp/terraform/issues/3992))
* core: Support HTTP basic auth in consul remote state ([#4166](https://github.com/hashicorp/terraform/issues/4166))
* core: Improve error message on resource arity mismatch ([#4244](https://github.com/hashicorp/terraform/issues/4244))
* core: Add support for unary operators + and - to the interpolation syntax ([#3621](https://github.com/hashicorp/terraform/issues/3621))
* core: Add SSH agent support for Windows ([#4323](https://github.com/hashicorp/terraform/issues/4323))
* core: Add `sha1()` interpolation function ([#4450](https://github.com/hashicorp/terraform/issues/4450))
* provider/aws: Add `placement_group` as an option for `aws_autoscaling_group` ([#3704](https://github.com/hashicorp/terraform/issues/3704))
* provider/aws: Add support for DynamoDB Table StreamSpecifications ([#4208](https://github.com/hashicorp/terraform/issues/4208))
* provider/aws: Add `name_prefix` to Security Groups ([#4167](https://github.com/hashicorp/terraform/issues/4167))
* provider/aws: Add support for removing nodes to `aws_elasticache_cluster` ([#3809](https://github.com/hashicorp/terraform/issues/3809))
* provider/aws: Add support for `skip_final_snapshot` to `aws_db_instance` ([#3853](https://github.com/hashicorp/terraform/issues/3853))
* provider/aws: Adding support for Tags to DB SecurityGroup ([#4260](https://github.com/hashicorp/terraform/issues/4260))
* provider/aws: Adding Tag support for DB Param Groups ([#4259](https://github.com/hashicorp/terraform/issues/4259))
* provider/aws: Fix issue with updated route ids for VPC Endpoints ([#4264](https://github.com/hashicorp/terraform/issues/4264))
* provider/aws: Added measure_latency option to Route 53 Health Check resource ([#3688](https://github.com/hashicorp/terraform/issues/3688))
* provider/aws: Validate IOPs for EBS Volumes ([#4146](https://github.com/hashicorp/terraform/issues/4146))
* provider/aws: DB Subnet group arn output ([#4261](https://github.com/hashicorp/terraform/issues/4261))
* provider/aws: Get full Kinesis streams view with pagination ([#4368](https://github.com/hashicorp/terraform/issues/4368))
* provider/aws: Allow changing private IPs for ENIs ([#4307](https://github.com/hashicorp/terraform/issues/4307))
* provider/aws: Retry MalformedPolicy errors due to newly created principals in S3 Buckets ([#4315](https://github.com/hashicorp/terraform/issues/4315))
* provider/aws: Validate `name` on `db_subnet_group` against AWS requirements ([#4340](https://github.com/hashicorp/terraform/issues/4340))
* provider/aws: wait for ASG capacity on update ([#3947](https://github.com/hashicorp/terraform/issues/3947))
* provider/aws: Add validation for ECR repository name ([#4431](https://github.com/hashicorp/terraform/issues/4431))
* provider/docker: Add support for setting the entry point on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting the restart policy on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting memory, swap and CPU shares on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting labels on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for setting log driver and options on `docker_container` resources ([#3761](https://github.com/hashicorp/terraform/issues/3761))
* provider/docker: Add support for settings network mode on `docker_container` resources ([#4475](https://github.com/hashicorp/terraform/issues/4475))
* provider/heroku: Improve handling of Applications within an Organization ([#4495](https://github.com/hashicorp/terraform/issues/4495))
* provider/vsphere: Add support for custom vm params on `vsphere_virtual_machine` ([#3867](https://github.com/hashicorp/terraform/issues/3867))
* provider/vsphere: Rename vcenter_server config parameter to something clearer ([#3718](https://github.com/hashicorp/terraform/issues/3718))
* provider/vsphere: Make allow_unverified_ssl a configuable on the provider ([#3933](https://github.com/hashicorp/terraform/issues/3933))
* provider/vsphere: Add folder handling for folder-qualified vm names ([#3939](https://github.com/hashicorp/terraform/issues/3939))
* provider/vsphere: Change ip_address parameter for ipv6 support ([#4035](https://github.com/hashicorp/terraform/issues/4035))
* provider/openstack: Increase instance timeout from 10 to 30 minutes ([#4223](https://github.com/hashicorp/terraform/issues/4223))
* provider/google: Add `restart_policy` attribute to `google_managed_instance_group` ([#3892](https://github.com/hashicorp/terraform/issues/3892))
* core: skip provider input for deprecated fields ([#4193](https://github.com/hashicorp/terraform/issues/4193))
* core: Fix issue which could cause fields that become empty to retain old values in the state ([#3257](https://github.com/hashicorp/terraform/issues/3257))
* provider/docker: Fix an issue running with Docker Swarm by looking up containers by ID instead of name ([#4148](https://github.com/hashicorp/terraform/issues/4148))
* provider/openstack: Better handling of load balancing resource state changes ([#3926](https://github.com/hashicorp/terraform/issues/3926))
* provider/aws: Treat `INACTIVE` ECS cluster as deleted ([#4364](https://github.com/hashicorp/terraform/issues/4364))
* provider/aws: Skip `source_security_group_id` determination logic for Classic ELBs ([#4075](https://github.com/hashicorp/terraform/issues/4075))
* provider/aws: Fix issue destroy Route 53 zone/record if it no longer exists ([#4198](https://github.com/hashicorp/terraform/issues/4198))
* provider/aws: Fix issue force destroying a versioned S3 bucket ([#4168](https://github.com/hashicorp/terraform/issues/4168))
* provider/aws: Update DB Replica to honor storage type ([#4155](https://github.com/hashicorp/terraform/issues/4155))
* provider/aws: Fix issue creating AWS RDS replicas across regions ([#4215](https://github.com/hashicorp/terraform/issues/4215))
* provider/aws: Fix issue with Route53 and zero weighted records ([#4427](https://github.com/hashicorp/terraform/issues/4427))
* provider/aws: Fix issue with iam_profile in aws_instance when a path is specified ([#3663](https://github.com/hashicorp/terraform/issues/3663))
* provider/aws: Refactor AWS Authentication chain to fix issue with authentication and IAM ([#4254](https://github.com/hashicorp/terraform/issues/4254))
* provider/aws: Fix issue with finding S3 Hosted Zone ID for eu-central-1 region ([#4236](https://github.com/hashicorp/terraform/issues/4236))
* provider/aws: Fix missing AMI issue with Launch Configurations ([#4242](https://github.com/hashicorp/terraform/issues/4242))
* provider/aws: Opsworks stack SSH key is write-only ([#4241](https://github.com/hashicorp/terraform/issues/4241))
* provider/aws: Update VPC Endpoint to correctly set route table ids ([#4392](https://github.com/hashicorp/terraform/issues/4392))
* provider/aws: Fix issue with nil parameter group value causing panic in `aws_db_parameter_group` ([#4318](https://github.com/hashicorp/terraform/issues/4318))
* provider/aws: Fix issue with Elastic IPs not recognizing when they have been unassigned manually ([#4387](https://github.com/hashicorp/terraform/issues/4387))
* provider/aws: Use body or URL for all CloudFormation stack updates ([#4370](https://github.com/hashicorp/terraform/issues/4370))
* provider/aws: Fix bug w/ changing ECS svc/ELB association ([#4366](https://github.com/hashicorp/terraform/issues/4366))
* provider/aws: Fix RDS unexpected state config ([#4490](https://github.com/hashicorp/terraform/issues/4490))
* provider/digitalocean: Fix issue where a floating IP attached to a missing droplet causes a panic ([#4214](https://github.com/hashicorp/terraform/issues/4214))
* provider/google: Fix project metadata sshKeys from showing up and causing unnecessary diffs ([#4512](https://github.com/hashicorp/terraform/issues/4512))
* provider/heroku: Retry drain create until log channel is assigned ([#4823](https://github.com/hashicorp/terraform/issues/4823))
* provider/openstack: Handle volumes in "deleting" state ([#4204](https://github.com/hashicorp/terraform/issues/4204))
* provider/rundeck: Tolerate Rundeck server not returning project name when reading a job ([#4301](https://github.com/hashicorp/terraform/issues/4301))
* provider/vsphere: Create and attach additional disks before bootup ([#4196](https://github.com/hashicorp/terraform/issues/4196))
* provider/openstack: Convert block_device from a Set to a List ([#4288](https://github.com/hashicorp/terraform/issues/4288))
* provider/google: Terraform identifies deleted resources and handles them appropriately on Read ([#3913](https://github.com/hashicorp/terraform/issues/3913))
* provider/cloudstack: Reduce the number of network calls required for common operations ([#4051](https://github.com/hashicorp/terraform/issues/4051))
* provider/aws: Make `publically_accessible` on an `aws_db_instance` update existing instances instead of forcing new ones ([#3895](https://github.com/hashicorp/terraform/issues/3895))
* provider/aws: Allow `block_duration_minutes` to be set for spot instance requests ([#4071](https://github.com/hashicorp/terraform/issues/4071))
* provider/aws: Make setting `acl` on S3 buckets update existing buckets instead of forcing new ones ([#4080](https://github.com/hashicorp/terraform/issues/4080))
* provider/aws: Make updates to `assume_role_policy` modify existing IAM roles instead of forcing new ones ([#4107](https://github.com/hashicorp/terraform/issues/4107))
* core: Fix a bug which prevented HEREDOC syntax being used in lists ([#4078](https://github.com/hashicorp/terraform/issues/4078))
* core: Fix a bug which prevented HEREDOC syntax where the anchor ends in a number ([#4128](https://github.com/hashicorp/terraform/issues/4128))
* core: Fix a bug which prevented HEREDOC syntax being used with Windows line endings ([#4069](https://github.com/hashicorp/terraform/issues/4069))
* provider/aws: Fix a bug which could result in a panic when reading EC2 metadata ([#4024](https://github.com/hashicorp/terraform/issues/4024))
* provider/aws: Fix issue recreating security group rule if it has been destroyed ([#4050](https://github.com/hashicorp/terraform/issues/4050))
* provider/aws: Fix issue with some attributes in Spot Instance Requests returning as nil ([#4132](https://github.com/hashicorp/terraform/issues/4132))
* provider/aws: Fix issue where SPF records in Route 53 could show differences with no modification to the configuration ([#4108](https://github.com/hashicorp/terraform/issues/4108))
* provisioner/chef: Fix issue with path separators breaking the Chef provisioner on Windows ([#4041](https://github.com/hashicorp/terraform/issues/4041))
* **New provider: `tls`** - A utility provider for generating TLS keys/self-signed certificates for development and testing ([#2778](https://github.com/hashicorp/terraform/issues/2778))
* core: Improve message to list only resources which will be destroyed when using `--target` ([#3859](https://github.com/hashicorp/terraform/issues/3859))
* connection/ssh: Accept `private_key` contents instead of paths ([#3846](https://github.com/hashicorp/terraform/issues/3846))
* provider/google: `preemptible` option for instance_template ([#3667](https://github.com/hashicorp/terraform/issues/3667))
* provider/google: Accurate Terraform Version ([#3554](https://github.com/hashicorp/terraform/issues/3554))
* provider/aws: Add CORS settings to S3 bucket ([#3387](https://github.com/hashicorp/terraform/issues/3387))
* provider/aws: Add notification topic ARN for ElastiCache clusters ([#3674](https://github.com/hashicorp/terraform/issues/3674))
* provider/aws: Add `kinesis_endpoint` for configuring Kinesis ([#3255](https://github.com/hashicorp/terraform/issues/3255))
* provider/aws: Add a computed ARN for S3 Buckets ([#3685](https://github.com/hashicorp/terraform/issues/3685))
* provider/aws: Add S3 support for Lambda Function resource ([#3794](https://github.com/hashicorp/terraform/issues/3794))
* provider/aws: Add `name_prefix` option to launch configurations ([#3802](https://github.com/hashicorp/terraform/issues/3802))
* provider/aws: Add support for group name and path changes with IAM group update function ([#3237](https://github.com/hashicorp/terraform/issues/3237))
* provider/aws: Provide `source_security_group_id` for ELBs inside a VPC ([#3780](https://github.com/hashicorp/terraform/issues/3780))
* provider/aws: Add snapshot window and retention limits for ElastiCache (Redis) ([#3707](https://github.com/hashicorp/terraform/issues/3707))
* provider/aws: Add username updates for `aws_iam_user` ([#3227](https://github.com/hashicorp/terraform/issues/3227))
* provider/aws: Add AutoMinorVersionUpgrade to RDS Instances ([#3677](https://github.com/hashicorp/terraform/issues/3677))
* provider/aws: Add `access_logs` to ELB resource ([#3756](https://github.com/hashicorp/terraform/issues/3756))
* provider/aws: Add a retry function to rescue an error in creating Autoscaling Lifecycle Hooks ([#3694](https://github.com/hashicorp/terraform/issues/3694))
* provider/aws: `engine_version` is now optional for DB Instance ([#3744](https://github.com/hashicorp/terraform/issues/3744))
* provider/aws: Add configuration to enable copying RDS tags to final snapshot ([#3529](https://github.com/hashicorp/terraform/issues/3529))
This will introduce plans on upgrade to this version, in order to correct the ordering ([#2890](https://github.com/hashicorp/terraform/issues/2890))
* provider/aws: Allow cluster name, not only ARN for `aws_ecs_service` ([#3668](https://github.com/hashicorp/terraform/issues/3668))
* provider/aws: Fix a bug where a non-lower-cased `maintenance_window` can cause unnecessary planned changes ([#4020](https://github.com/hashicorp/terraform/issues/4020))
* provider/aws: Only set `weight` on an `aws_route53_record` if it has been set in configuration ([#3900](https://github.com/hashicorp/terraform/issues/3900))
* provider/aws: Ignore association not existing on route table destroy ([#3615](https://github.com/hashicorp/terraform/issues/3615))
* provider/aws: Fix policy encoding issue with SNS Topics ([#3700](https://github.com/hashicorp/terraform/issues/3700))
* provider/aws: Correctly export ARN in `aws_iam_saml_provider` ([#3827](https://github.com/hashicorp/terraform/issues/3827))
* provider/aws: Fix issue deleting users who are attached to a group ([#4005](https://github.com/hashicorp/terraform/issues/4005))
* provider/aws: Fix crash in Route53 Record if Zone not found ([#3945](https://github.com/hashicorp/terraform/issues/3945))
* provider/aws: Retry deleting IAM Server Cert on dependency violation ([#3898](https://github.com/hashicorp/terraform/issues/3898))
* provider/aws: Update Spot Instance request to provide connection information ([#3940](https://github.com/hashicorp/terraform/issues/3940))
* provider/aws: Fix typo in error checking for IAM Policy Attachments ([#3970](https://github.com/hashicorp/terraform/issues/3970))
* provider/aws: Fix issue with LB Cookie Stickiness and empty expiration period ([#3908](https://github.com/hashicorp/terraform/issues/3908))
* provider/aws: Tolerate ElastiCache clusters being deleted outside Terraform ([#3767](https://github.com/hashicorp/terraform/issues/3767))
* provider/aws: Downcase Route 53 record names in state file to match API output ([#3574](https://github.com/hashicorp/terraform/issues/3574))
* provider/aws: Fix issue that could occur if no ECS Cluster was found for a given name ([#3829](https://github.com/hashicorp/terraform/issues/3829))
* provider/aws: Fix issue with SNS topic policy if omitted ([#3777](https://github.com/hashicorp/terraform/issues/3777))
* provider/aws: Support scratch volumes in `aws_ecs_task_definition` ([#3810](https://github.com/hashicorp/terraform/issues/3810))
* provider/aws: Treat `aws_ecs_service` w/ Status==INACTIVE as deleted ([#3828](https://github.com/hashicorp/terraform/issues/3828))
* provider/aws: Expand ~ to homedir in `aws_s3_bucket_object.source` ([#3910](https://github.com/hashicorp/terraform/issues/3910))
* provider/aws: Fix issue with updating the `aws_ecs_task_definition` where `aws_ecs_service` didn't wait for a new computed ARN ([#3924](https://github.com/hashicorp/terraform/issues/3924))
* provider/aws: Prevent crashing when deleting `aws_ecs_service` that is already gone ([#3914](https://github.com/hashicorp/terraform/issues/3914))
* provider/aws: Allow spaces in `aws_db_subnet_group.name` (undocumented in the API) ([#3955](https://github.com/hashicorp/terraform/issues/3955))
* provider/aws: Make VPC ID required on subnets ([#4021](https://github.com/hashicorp/terraform/issues/4021))
* provider/azure: Various bug fixes ([#3695](https://github.com/hashicorp/terraform/issues/3695))
* provider/digitalocean: Fix issue preventing SSH fingerprints from working ([#3633](https://github.com/hashicorp/terraform/issues/3633))
* provider/digitalocean: Fix the DigitalOcean Droplet 404 potential on refresh of state ([#3768](https://github.com/hashicorp/terraform/issues/3768))
* provider/openstack: Fix several issues causing unresolvable diffs ([#3440](https://github.com/hashicorp/terraform/issues/3440))
* provider/openstack: Safely delete security groups ([#3696](https://github.com/hashicorp/terraform/issues/3696))
* provider/openstack: Ignore order of `security_groups` in instance ([#3651](https://github.com/hashicorp/terraform/issues/3651))
* provider/vsphere: Fix d.SetConnInfo error in case of a missing IP address ([#3636](https://github.com/hashicorp/terraform/issues/3636))
* provider/openstack: Fix boot from volume ([#3206](https://github.com/hashicorp/terraform/issues/3206))
* provider/openstack: Fix crashing when image is no longer accessible ([#2189](https://github.com/hashicorp/terraform/issues/2189))
* provider/openstack: Better handling of network resource state changes ([#3712](https://github.com/hashicorp/terraform/issues/3712))
* provider/openstack: Fix crashing when no security group is specified ([#3801](https://github.com/hashicorp/terraform/issues/3801))
* provider/packet: Fix issue that could cause errors when provisioning many devices at once ([#3847](https://github.com/hashicorp/terraform/issues/3847))
* provider/packet: Fix connection information for devices, allowing provisioners to run ([#3948](https://github.com/hashicorp/terraform/issues/3948))
* provider/openstack: Fix issue preventing security group rules from being removed ([#3796](https://github.com/hashicorp/terraform/issues/3796))
* provider/template: `template_file`: source contents instead of path ([#3909](https://github.com/hashicorp/terraform/issues/3909))
* helper/schema: Better error message for assigning list/map to string ([#3009](https://github.com/hashicorp/terraform/issues/3009))
* remote/state/atlas: Additional remote state conflict handling for semantically neutral state changes ([#3603](https://github.com/hashicorp/terraform/issues/3603))
* core: Fix remote state conflicts caused by ambiguity in ordering of deeply nested modules ([#3573](https://github.com/hashicorp/terraform/issues/3573))
* core: Fix remote state conflicts caused by state metadata differences ([#3569](https://github.com/hashicorp/terraform/issues/3569))
* core: Avoid using http.DefaultClient ([#3532](https://github.com/hashicorp/terraform/issues/3532))
* core: Add a function to find the index of an element in a list. ([#2704](https://github.com/hashicorp/terraform/issues/2704))
* core: Print all outputs when `terraform output` is called with no arguments ([#2920](https://github.com/hashicorp/terraform/issues/2920))
* core: In plan output summary, count resource replacement as Add/Remove instead of Change ([#3173](https://github.com/hashicorp/terraform/issues/3173))
* core: Add interpolation functions for base64 encoding and decoding. ([#3325](https://github.com/hashicorp/terraform/issues/3325))
* core: Expose parallelism as a CLI option instead of a hard-coding the default of 10 ([#3365](https://github.com/hashicorp/terraform/issues/3365))
* core: Add interpolation function `compact`, to remove empty elements from a list. ([#3239](https://github.com/hashicorp/terraform/issues/3239)), ([#3479](https://github.com/hashicorp/terraform/issues/3479))
* core: Allow filtering of log output by level, using e.g. ``TF_LOG=INFO`` ([#3380](https://github.com/hashicorp/terraform/issues/3380))
* provider/aws: Add `instance_initiated_shutdown_behavior` to AWS Instance ([#2887](https://github.com/hashicorp/terraform/issues/2887))
* provider/aws: Support IAM role names (previously just ARNs) in `aws_ecs_service.iam_role` ([#3061](https://github.com/hashicorp/terraform/issues/3061))
* provider/aws: Add update method to RDS Subnet groups, can modify subnets without recreating ([#3053](https://github.com/hashicorp/terraform/issues/3053))
* provider/aws: Paginate notifications returned for ASG Notifications ([#3043](https://github.com/hashicorp/terraform/issues/3043))
* provider/aws: Add validation for `app_cookie_stickiness_policy.name` ([#3277](https://github.com/hashicorp/terraform/issues/3277))
* provider/aws: Add validation for `db_parameter_group.name` ([#3279](https://github.com/hashicorp/terraform/issues/3279))
* provider/aws: Set DynamoDB Table ARN after creation ([#3500](https://github.com/hashicorp/terraform/issues/3500))
* provider/aws: `aws_s3_bucket_object` allows interpolated content to be set with new `content` attribute. ([#3200](https://github.com/hashicorp/terraform/issues/3200))
* provider/aws: Allow tags for `aws_kinesis_stream` resource. ([#3397](https://github.com/hashicorp/terraform/issues/3397))
* provider/aws: Configurable capacity waiting duration for ASGs ([#3191](https://github.com/hashicorp/terraform/issues/3191))
* core: Fix problems referencing list attributes in interpolations ([#2157](https://github.com/hashicorp/terraform/issues/2157))
* core: don't error on computed value during input walk ([#2988](https://github.com/hashicorp/terraform/issues/2988))
* core: Ignore missing variables during destroy phase ([#3393](https://github.com/hashicorp/terraform/issues/3393))
* provider/google: Crashes with interface conversion in GCE Instance Template ([#3027](https://github.com/hashicorp/terraform/issues/3027))
* provider/google: Convert int to int64 when building the GKE cluster.NodeConfig struct ([#2978](https://github.com/hashicorp/terraform/issues/2978))
* provider/google: google_compute_instance_template.network_interface.network should be a URL ([#3226](https://github.com/hashicorp/terraform/issues/3226))
* provider/aws: Retry creation of `aws_ecs_service` if IAM policy isn't ready yet ([#3061](https://github.com/hashicorp/terraform/issues/3061))
* provider/aws: Fix issue with mixed capitalization for RDS Instances ([#3053](https://github.com/hashicorp/terraform/issues/3053))
* provider/aws: Fix issue with RDS to allow major version upgrades ([#3053](https://github.com/hashicorp/terraform/issues/3053))
* provider/aws: Fix shard_count in `aws_kinesis_stream` ([#2986](https://github.com/hashicorp/terraform/issues/2986))
* provider/aws: Fix issue with `key_name` and using VPCs with spot instance requests ([#2954](https://github.com/hashicorp/terraform/issues/2954))
by AWS ([#3120](https://github.com/hashicorp/terraform/issues/3120))
* provider/aws: Read instance source_dest_check and save to state ([#3152](https://github.com/hashicorp/terraform/issues/3152))
* provider/aws: Allow `weight = 0` in Route53 records ([#3196](https://github.com/hashicorp/terraform/issues/3196))
* provider/aws: Normalize aws_elasticache_cluster id to lowercase, allowing convergence. ([#3235](https://github.com/hashicorp/terraform/issues/3235))
* provider/aws: Fix ValidateAccountId for IAM Instance Profiles ([#3313](https://github.com/hashicorp/terraform/issues/3313))
* provider/aws: Update Security Group Rules to Version 2 ([#3019](https://github.com/hashicorp/terraform/issues/3019))
* provider/aws: Migrate KeyPair to version 1, fixing issue with using `file()` ([#3470](https://github.com/hashicorp/terraform/issues/3470))
* provider/aws: Fix force_delete on autoscaling groups ([#3485](https://github.com/hashicorp/terraform/issues/3485))
* provider/aws: Fix crash with VPC Peering connections ([#3490](https://github.com/hashicorp/terraform/issues/3490))
* provider/aws: fix bug with reading GSIs from dynamodb ([#3300](https://github.com/hashicorp/terraform/issues/3300))
* provider/docker: Fix issue preventing private images from being referenced ([#2619](https://github.com/hashicorp/terraform/issues/2619))
* provider/digitalocean: Fix issue causing unnecessary diffs based on droplet slugsize case ([#3284](https://github.com/hashicorp/terraform/issues/3284))
* core: Makefile target "plugin-dev" for building just one plugin. ([#3229](https://github.com/hashicorp/terraform/issues/3229))
* helper/schema: Don't allow ``Update`` func if no attributes can actually be updated, per schema. ([#3288](https://github.com/hashicorp/terraform/issues/3288))
* helper/schema: Default hashing function for sets ([#3018](https://github.com/hashicorp/terraform/issues/3018))
* helper/multierror: Remove in favor of [github.com/hashicorp/go-multierror](http://github.com/hashicorp/go-multierror). ([#3336](https://github.com/hashicorp/terraform/issues/3336))
