dmd 1.074 and 2.059 release

[Adam D. Ruppe]

"Strive to make to­Hash, toString, opE­quals and opCmp 
func­tions pure, nothrow, const and @safe. Soon, this will 
be­come a re­quire­ment."

man, that's a lot of decorations.


This kind of thing makes me thing we should have opposites:
impure, maythrow, mutable, and @system. And virtual, while
I'm at it.

Then it might be a lil easier to just go

module lots.of.decorations;
pure:
const:
@safe:
nothrow:


and undecorate as needed. We seem to be moving in this
kind of direction.