Added cask for LineIn app

This patch adds LineIn app from Rogue Amoeba, which enables soft playthru of audio from input devices.
Add cask for MacPAR deLuxe

MacPAR deLuxe is a utility program that runs on the Apple Macintosh. It is useful to you if you download (or upload) binary files from internet newsgroups (a.k.a. “Usenet”).
Often, binary content comes in the form of sets of many files that together form a “rar” archive. MacPAR deLuxe assist you in combining these files after the download finishes.
add proper version number (4.4.1)
added Google Chrome Beta and updated VirtualBox to 4.2.18
fix #994 - updated power-key download url and upgraded to 1.1
upgrade sourcetree to 1.6.4.1
changed version to 'latest' and removed checksum
Merge pull request #996 from oldskool73/power-key

updated power-key download url and upgraded to 1.1
Merge pull request #997 from oldskool73/sourcetree

upgrade sourcetree to 1.6.4.1
Merge pull request #993 from oldskool73/macpardeluxe

Add cask for 'MacPAR deLuxe'
Merge pull request #992 from singles/linein

Added cask for LineIn app
removing chrome beta as requested <https://github.com/phinze/homebrew-cask/pull/995#issuecomment-24075754>
Merge pull request #999 from pwaleczek/master

updated VirtualBox to 4.2.18
Add Unity3d cask

Unity is a game development ecosystem: a powerful rendering engine fully integrated with a complete set of intuitive tools and rapid workflows to create interactive 3D content; easy multiplatform publishing; thousands of quality, ready-made assets in the Asset Store and a knowledge-sharing Community.
Merge pull request #1000 from oldskool73/unity3d

Add Unity3d cask
fix overzealous cask already created error

this prevented any cask being created via `brew cask create` that was a
suffix substring of an existing cask.

refs #998
Added cask for 0ad

Due to Ruby's limitations on class names, I had to refer to this game
as "Zero-AD". If anyone knows how to make this work with the command
`$ brew cask install 0ad`, please let me know!
Merge pull request #1001 from phinze/998-create-with-substring

fix overzealous cask already created error
Merge pull request #1002 from singingwolfboy/master

Added cask for 0ad
bump version to v0.16.0