This package is came from Spirit, and remove poll and mention features.
The tests also came from Spirit.
Most examples can find in tests_markdown.py
settings.py need follow code:
ST_ALLOWED_URL_PROTOCOLS = {
'http', 'https', 'mailto', 'ftp', 'ftps',
'git', 'svn', 'magnet', 'irc', 'ircs'}
ST_MENTIONS_PER_COMMENT = 30