Fix PEP8 violations in `config.py`
Fix PEP8 violations in dir.py
Fix PEP8 violations in env.py
Fix PEP8 violations in file.py
Fix PEP8 violations in filesystem.py
Fix PEP8 violations in git.py
Fix PEP8 violations in github.py
Fix PEP8 violations in pip.py
Fix PEP8 violations in sudo.py
Fix PEP8 violations in upstart.py
Fix PEP8 violations in util.py
Merge pull request #68 from elliot42/master

Fix remaining PEP8 violations in mcv