[setup.py] add 'bump_version' and 'release' commands
[setup.py] add 'bump_version' and 'release' commands

same as https://github.com/googlei18n/ufo2ft/pull/128
and https://github.com/googlei18n/glyphsLib/commit/6e50a1994d23f0c64487b584ec6dc6b6a000ab18

googlefonts/fontmake,googlei18n/fontmake,googlefonts/fontmake,googlei18n/fontmake