caskroom/homebrew-cask — pull request #6464 by rolandwalker (2014-10-03 14:46:34+00:00)
Title: change 6 Casks to use `container :type =>`

Instead of `container_type`.

This form was not supported until v0.40.0. However, so few Casks are affected that it is unlikely we will see many bug reports. Users will get a prompt to upgrade if attempting to use these Casks with an older version.