Adds Sublime project files to gitignore
Makes exception-handling Python3-friendly
Makes print function Python2 and 3 compatible
Makes StringIO import Python2 and 3 compatible
Implements cmp() for Python3 compatibility
Removes imports from non-existent module
Makes cStringIO imports Python2 and 3 compatible
Solves Python3 'basestring' incompatibility
Solves 'unicode' vs 'str' incompatibility