part of redesign of macro scoping mechanism
changing to newer macro escape mechanism, using uints in more places
comments & whitespace
starting to add sexps
got sexp to compile
tmp
tmp
tmp
working on adding let-renaming
parser comments
adding fresh_name_fn
bugfixing
removed obsolete reference to purity
rename repr to name
changed to use get_ident_interner() everywhere
removed some interner fields
cleanup of (now) unused cxs
rest of crazy crash change
cleanup, cleanup