Finicky 3.1.1 - Running Finicky as an agent

This is a small release which is intended to fix an annoying bug where Finicky shows up in the dock and "recent applications". Published as a pre-release until I get confirmation it fixes the issue.

No new features. Contains some refactoring.

Bug fixes:

• #78 Finicky appears in the dock and in "recent applications" Thanks to @notDavid and @alejandroivan for helping with testing.