2016.9.19
- Default image alt text option created and set to a default of empty string "" to maintain backward compatibility
- Fix #136: --default-image-alt now takes a string as argument
- Fix #113: Stop changing quiet levels on /script tags.
- Merge #126: Fix deprecation warning on py3 due to html.escape
- Fix #145: Running test suite on Travis CI for Python 2.6.