closes issue #12, picklability issues

FormattingString and ParameterizingString now use *args for their
__new__ methods instead of (keyword=args), so that they are
picklable, esp. in regards to Multiprocessing. all pickle protocol
versions are tested.
ignore RedefinedWhileUnused pyflakes

this is an issue in combination of: py33 + pyflakes + py.test
bump minor version for release pickle-fix