caskroom/homebrew-cask — pull request #6357 by rolandwalker (2014-09-27 14:28:41+00:00)
Title: WIP update valid :license values

* change `:free` (closed source) to `:gratis` for clarity
* add `:freemium` (*eg* Alfred)
* add `:lppl` (LaTeX)

**WIP** pending discussion here and/or in IRC. In particular, I think `:free` is a poor name, and would lead to confusion.