WIP: Support Python 3.

PyString -> PyBytes

fix prints missed

Accept Python 3 strings in open()

Fix logger name (string issue again)

Fix color format string types.

Fix print function

FIX: Missing arg

No need to specify -3

try unicode_literals

FIX: Use six and __future__ imports.

FIX: Encome VideoFrame format as bytes.

More six and future fixes. Added temp prints in VideoFormat

fixing bytes/str issues