# CHANGELOG ## next release * `Aws\Iot` - Adds support for thing types. Thing types are entities that store a description of common features of Things that are of the same logical type. Also adds support for `:` in Thing name. Adds a separator in Firehose action. * `Aws\util` - Parse ini files containing comments using # ## 3.21.6 - 2017-01-27 * `Aws\CloudDirectory` - Added support for new service `AWS Cloud Directory` * `Aws\CodeDeploy` - Added support for blue/green deployments * `Aws\Ec2` - Added support to Add instance health check functionality to replace unhealthy EC2 Spot fleet instances with fresh ones. * `Aws\Rds` - Upgraded Snapshot Engine Version