TODO

Smart CSS things (fill in the processors)
Project global defines, parameters.
pre- and post-scripts that will be run from main, either some shipped with heckweasel or project-level.
Library of template modules? ATOM et al.
Some off the shelf website templates and a template manager.
Live refreshing server thing which maps a heckweasel tree into a web server's memory and updates on change.
https://github.com/Python-Markdown/markdown/wiki/Third-Party-Extensions
add markdown_link_attr_modifier extension
add figureAltCaption extension
add qrcode extension
Add support to define macros or whatever for Jinja, or to include generic stanzas in any output so adding macros won't mean repeatedly including them.
It'd be good to generate a dependency tree and only recompile things based on changes, like makefile-like behavior.
Fragments which would be blobs of mechanics like rss feed, thumbnail links, etc. They would be virtual files and other changes to processing chains and project contents. python -mheckweasel --fragment=rss,config=foo.meta etc.
Run commands as part of processing chains
Project level processing chain overrides in the .meta or whatever.