Fixing C's Biggest Mistake

[rikki cattermole]

P1: separate out known state modules (ideally good) vs unknown state.

To turn a module into known state you must severely document it, 
including TODO's.

For good state: do the TODO's.

Sound familiar? Its packagerization of leaf modules.



Oh and on another note: WTF why do we have two ASTs? That's a massive 
technical debt to keep paying in maintenance (which we don't do).

Good example of this: 
https://forum.dlang.org/post/gfwduutjchvppcolsoel@forum.dlang.org