Release v1.4.15
===

Service Model Updates
---
`service/cognitoidentityprovider`: Update Amazon Cognito Identity Provider service model
`service/devicefarm`: Update AWS Device Farm documentation
`service/opsworks`: Update AWS OpsWorks service model
`service/s3`: Update Amazon Simple Storage Service model
`service/waf`: Update AWS WAF service model

SDK Bug Fixes
---
`aws/request`: Fix HTTP Request Body race condition #874

SDK Feature Updates
---
`aws/ec2metadata`: Add support for EC2 User Data #872 
`aws/signer/v4`: Remove logic determining if request needs to be resigned #876

Release v1.4.14 (2016-09-29)
===
* `service/ec2`:  api, documentation, and paginators updates.
* `service/s3`:  api and documentation updates.

Release v1.4.13 (2016-09-27)
===
* `service/codepipeline`:  documentation updates.
* `service/cloudformation`:  api and documentation updates.
* `service/kms`:  documentation updates.
* `service/elasticfilesystem`:  documentation updates.
* `service/snowball`:  documentation updates.