token: Remove filter dependency from lexer.
semantic: Write vtables in constructors after super calls.
semantic: Ensure that super calls in constructors are couched in preludes.
semantic: Ensure constructor preludes occur just before returns.
rt: Assign class vtables in gcMalloc.
semantic: Implement interfaces.
remove prelude adding
So long as Prf_Jakob doesn't read the diff, this is a commit that passes Tesla.