v0.4.0

• Microsoft Windows filename selector fixes, with Appveyor CI testing (a0c7c60)
• Allow multiple codes to be disabled by per-line comments (4d5b900)
• Allow comment after each rule line (1220229)
• Prevent use with flake8 v3 (19bc89a)
• Support both pep8 and pycodestyle in test suite (4d2e153)