Add Mapbox Studio.app v0.1.0
DSL convert last of test suite to `pkg` stanza

instead of `install`
doc nits re: caveats.  Broken anchor link.
update hashcat.rb to use depends_on :formula

This is the only Cask with `depends_on_formula` in the main repo.
doc: highlight `:pkgutil`

As the most-important `uninstall` directive
metadata directory support

- incidentally adds defensive driving against null version
  in method `destination_path`
Update Netbeans to v8.0.1

Closes #6142.
Merge pull request #6143 from vitorgalvao/fix-6142

Update Netbeans to v8.0.1
Merge pull request #6131 from kolen/mapbox-studio

Add Mapbox Studio.app v0.1.0
updated suspicious-package (latest)
Merge pull request #6144 from vitorgalvao/update-suspicious-package

updated suspicious-package (latest)
Upgrade packer to 0.7.1
Merge pull request #6147 from whiteley/packer

Upgrade packer to 0.7.1
updated unity3d (4.5.4)
Merge pull request #6148 from vitorgalvao/update-unity3d

updated unity3d (4.5.4)
CONTRIBUTING.md: Adding unversioned Cask info

The docs seemed to suggest that if versioned downloads were available,
to prefer them over unversioned ones. Since that's incorrect presently,
I attempted to correct that (see #6126 for more details).
replaced vagrant with unity in examples referencing the pkg
Merge pull request #6145 from treyharris/versioning-docfix

CONTRIBUTING.md: Adding unversioned Cask info
Changed Firefox to Firefox.app in CONTRIBUTING, for consistency with other examples.
Merge pull request #6150 from vitorgalvao/change-vagrant-examples

replaced vagrant with unity in examples referencing the pkg