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* api-change:``ec2``: Update ec2 command to latest version
* api-change:``codebuild``: Update codebuild command to latest version
* api-change:``elastictranscoder``: Update elastictranscoder command to latest version
* enhancement:s3: ``aws s3`` subcommands that list objects will use ListObjectsV2 instead of ListObjects `3549 <https://github.com/aws/aws-cli/issues/3549>`__.
* api-change:``elasticache``: Update elasticache command to latest version
* api-change:``cloudwatch``: Update cloudwatch command to latest version
* api-change:``secretsmanager``: Update secretsmanager command to latest version
* api-change:``ecs``: Update ecs command to latest version