Htmd

Added
- Python 3 support
- --all-templates option for `htmd start`
- templates command
- 404 page
- tests

Added
- setting MINIFY_HTML to minify resulting HTML
- setting PRETTY_HTML to fix indentation of resulting HTML
Fixed
- SITE_NAME bug in og:site_name

Added
- tag class to tag links
- option to prevent minification of JS, CSS, and HTML
- pygments stylesheet
- default styles for Markdown elements

Added
- option to show the beginning of the post in lists.
Removed
- default links styles for posts in lists.

Added
- option to show the beginning of the post in lists.

Removed
- default links styles for posts in lists.

Changed
- getting install_requires from requirements.txt