Fix tests for python3.
Fix stubbing of unbound methods in python 3.
The __repr__ implementation changed in version 3.3
Merge branch 'python3-unbound-methods' of github.com:GraylinKim/chai into GraylinKim-python3-unbound-methods

Conflicts:
	tests/stub_test.py
Merge conflict
Merge branch 'GraylinKim-python3-unbound-methods'