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* feature:``aws cloudfront``: Update the Amazon CloudFront command to support the latest API version 2013-08-26
* feature:``aws autoscaling``: Update the Auto Scaling client to support public IP address association of instances
* feature:``aws swf``: Update Amazon SWF to support signature version 4
* feature:``aws rds``: Update Amazon RDS with a new subcommand, ``add-source-identifier-to-subscription``