More simplification

[GrahamTheCoder]

Problem

Currently the simplification is haphazard due to the order that files are converted.

Solution

This introduces a phase to create a fully converted project before the simplification phase.
Due to the consistency, it's now possible to parallelize and maintain determinism.

There's a bit of leading whitespace introduced in a handful of cases. Didn't seem important enough to try fixing.

• At least one test covering the code changed (see recharacterization results)
• All tests pass