Upgrade trailer to 1.1.5
Merge pull request #7486 from srushe/upgrade-trailer-to-115

Upgrade trailer to v1.1.5
Add OpenSankore

Closes #7485.
Merge pull request #7487 from vitorgalvao/fix-7485

Add OpenSankore
Add uDig

Closes #7484.
Merge pull request #7488 from vitorgalvao/fix-7484

Add uDig
Merge remote-tracking branch 'caskroom/homebrew-cask/master'