Kapor Zhu

Supported PY3 and PB3

1

1. fixed flake8 issues(except samle_pb.py) 2. added `six` module to support PY3 3. upgraded proto file to PB3 4. removed useless tests for PB3

lettuce is incompatible with colorama 0.2.5

1

colorama 0.2.4 works. but colorama 0.2.5 failed. error message as follows: ``` Given I access url "/admin/" ``` Traceback (most recent call last): File "D:\projects\python\envs\aquasys-www\Lib\site-packages\lettuce\registry.p y", line 88, in call_hook...