2. Refactored Octopress filters into Liquid filters and pre/post render filters (using post_filters plugin)
3. Added methods to raw plugin to prevent Markdown and Textile from parsing blocks
4. Updated render partial to invoke the pre_render method of post_filters
5. Moved Rubypants filter out of default.html into Octopress post_render filters
6. Added raw's safe_wrapper method to codeblock and include_code filters
