Add OmniPlan cask

Project management made painless
Merge pull request #1029 from NanoXD/master

Update PGAdmin3 to 1.18
Merge pull request #1028 from NanoXD/OmniPlan

Add OmniPlan cask
Merge pull request #1030 from NanoXD/master

Update SPlayerX to 1.1.8
Merge pull request #1031 from NanoXD/master

Update checksum for Adobe Air
Added a cask for Aegisub - subtitle editor

Aegisub is a free, cross-platform open source tool for creating and modifying subtitles.
Merge pull request #1032 from singles/aegisub

Added a cask for Aegisub - subtitle editor
Added cask for Time Out - simple break reminder.

This app allows you to specify time, after which it will remind you to take a break from computer. Breaks are of course customizable.
Merge pull request #1033 from singles/time-out

Added cask for Time Out - simple break reminder