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* feature:``aws help topics``: Add support for listing available help topics.
* feature:``aws help config-vars``: Add help topic for configuration variables.
* feature:``aws help return-codes``: Add help topic for return codes.
* feature:``aws help s3-config``: Add help topic for configuration of s3 commands.
* bugfix:``aws lambda create-function/update-function-code``: Improve error message when invalid ``--zip-file`` values are provided (`issue 1296 <https://github.com/aws/aws-cli/pull/1296>`__)
* feature:``aws ec2``: Add support for new VM Import APIs, including ``import-image``. The new APIs provide support for importing multi-volume VMs to Amazon EC2 and other enhancements.
* feature:``aws iam``: Update AWS IAM command to latest version