Add Cornerstone cask.
Add Sidekick cask for managing laptop settings based on locale
Add Slicy cask
Add Things2 cask
Merge pull request #265 from NanoXD/Cornerstone

Add Cornerstone cask.
Merge pull request #268 from NanoXD/Things

Add Things2 cask
Merge pull request #266 from NanoXD/Sidekick

Add Sidekick cask
Merge pull request #267 from NanoXD/Slicy

Add Slicy cask