accept examples written in any language supported by LDoc
allow Markdown headers in module docstring by stripping #..
prettify code blocks in module docstring. Two new ldoc flags: dont_escape_underscore (when not using markdown.lua) and global_lookup (when specifically wanting global lookup for single symbols
dont_escape_underscore defaults to true if markdown.lua is not used; global_lookup defaults to true if parse_extra.C
summary/description with type/section fixed
Merge branch 'master' of github.com:stevedonovan/LDoc