Bikeshed rustdoc

rustdoc currently needs some love, and I'm going to give it some.

Architecture

• take AST, make pretty docs. easy!

Pain points with current rustdoc

• Implementation of Foo for Bar where <useless stuff> (from SL. where -> given?)

New features

• Unformatted JSON/XML (undecided) output
• More complete TOCs, indexes, links to all items documented
• Interactive browser interface (live search, toggle platform cfg's)
• every symbol should be able to be linked to its documentation (eg, types, methods, functions)
• new attribute that instructs rustdoc to inline a nested module into its parent's documentation
• document macros
• navigate visibility graph and don't generate docs for stuff which isn't visible
• document macro-generated code
• your feature requests here!

New bugs

• your bug requests here!

Progress

• this will track pull requests and status updates as I create them.