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_September 7th, 2016_
* Added support for port ranges in port mappings (171).
* Added `rexec` lifecycle check to execute commands within the target,
remote container being checked (169).
* Added support for ulimits at the service and container levels (173
and 174).
* Added `exec` auditor to execute a local script to record the audit
event (176).
* Using `volumes_from` on a container now implicitely defines a
service-level dependency on the `volumes_from` container's service
(175).