Specify that AudioMate is under MIT

https://github.com/sonicbee9/AudioMate/blob/develop/LICENSE.md
Specify that Audio Hijack Pro is commercial software
Specify that AudioEditor is gratis
Specify that Audacity is under GNU GPL

http://audacity.sourceforge.net/about/license
Specify that Au Lab is gratis
Specify that Atom is under MIT

https://atom.io/faq

> Is Atom open source?
> Yes. Atom is MIT licensed and the source is freely available from the
> https://github.com/atom/atom repository.
>
> All core Atom packages provided by GitHub are also available under the
> MIT license.
Specify that Atlantis is gratis
Specify that Atext is commercial software
Specify that Asepsis is under 3-clause BSD

https://github.com/binaryage/asepsis/blob/master/license.txt
Add BoinxTV.app v1.9.9-17091
Merge pull request #6645 from yegortimoschenko/specify-more-licenses

Specify more licenses (letter A)
convert `link` to `app` in bleep.rb
convert `link` to `artifact` in dwarf-fortress.rb
convert `link` to `app` in ip-in-menu-bar.rb
Merge pull request #6648 from rolandwalker/link_to_app_or_artifact

convert old-style `link` stanza to `app` or `artifact` in 3 Casks
Merge pull request #6638 from yegortimoschenko/not-tetris

Add Not Tetris 2 cask
Add Vagrant Bar.app v1.13

Taskbar utility for monitoring and managing vagrant VMs.
Add Audiobook Builder.app latest

Fix version in Audiobook Builder.app Cask
Add Bookends.app latest

Fix license in Bookends.app Cask
Merge pull request #6643 from roscoe/audiobook-builder

Add Audiobook Builder.app latest