stack effects + optimize exefn

array#fill -> array#new

check global decl names are not reserved

length -> len

use inline stack memory for vectors to reduce allocations

missing gcmark()

fix minor misc bugs

fix const folding

better error reporting

remove unused vecpop

style

SEL[*] gather operator

missing typestr for upval

removed unused TObject

errata

pez_checksig() helper

varargs

cache closures with no upvalues

.gitignore

inline some things