Remove/clean up debugging output a bit
Improve DUMP output a bit for Bool, Parcel, Range, and a few misc cases
Minor whitespace cleanups
Add comment with desugared version of $attr.get_value(self), which jnthn believes might fix an edge case later
First attempt at tests for DUMP, starting with simple literals
Comment out debug output in DUMP routines in Mu.pm
Begin implementing indented DUMP output; Mu.pm changes only for first pass