Minor version bump (v1.32.0)
Minor version bump (v1.32.0)

* Adding missing opts parameter to Docker::Volume.create
* Ensure stop & restart timeouts apply to Excon timeout for Container#stop/Container#restart
* Allow passing args to Container#attach
* Ignore files based on dockerignore
* Do not ship extra files in the gem
* Drop 1.9 support

moritzheiber/docker-api,ComputeStacks/docker-api,someara/docker-api,ComputeStacks/docker-api,someara/docker-api,swipely/docker-api,swipely/docker-api,moritzheiber/docker-api