Delete build/README
Let user boot bytecode determine user environment
Move handle_identifier to parser.js
Remove . and typed-lambda crazy again
let-mutable, define-mutable
Remove set!
Terminology changes
Rename --vau -> vau1
Rename --loop -> loop1
Rename Vau -> Vau1
Rename --catch -> catch* and don't let it create lexical contour
Small fixes.
Reorganized boot.wat
Don't export VM bindings to userland
Better stringification
Remove last traces of __
Remove string, rename get-current-environment -> the-environment