An implementation of a custom MarkupField for Django. A MarkupField is in essence a TextField with an associated markup type. The field also caches its rendered value.

It supports these markup types by default:
* html: allows HTML, potentially unsafe
* plain: plain text markup, calls urlize and replaces text with linebreaks
And these markups if the appropriate Python module is installed:
* markdown: default markdown renderer (requires python-markdown)
* restructuredtext: default ReST renderer (requires python-docutils)
* textile: default textile renderer (requires python-textile)