sexp_debug should check for a valid port first
Fixing matching logic for strict top-level bindings.
Don't allow defines in weird places.
Adding optional padding on heap objects for debugging.
Fixing an off-by-one error in bignum arithmetic-shift.
Another off-by-one error in ash.
Adding a modular-expt test.
Wrapping environment monad function bodies in let to allow internal define.
Adding initial RSA library.
Installing crypto libs.