Update to 2.2.12
    
    - New upstream release 2.2.12
      - This is a minor maintenance release with some minor new features
      - Most important is a fix for a crash in simple search
      - Python 3 compatibility has been further improved
      - Encoding detection in python files has been improved
      - Triple click now selects the line
      - On Mac OSX, Bluefish deals better with the new permission features
      - Using the correct language in the Bluefish user interface is fixed for
        certain languages on OSX
      - Several programming languages have improved syntax highlighting
      - Bluefish now works fine with Enchant2 for spell checking
    - Python support now requires Python ≥ 3.3, available from Fedora 18 onwards
    - Add patch to clean up appdata file so it passes validation