Core word set: 0 errors on Gerry Jackson's forth2012-test-suite/core.fr
- Fix POSTPONE for non-immediate words via COMPILE, mechanism
- Fix double-DOES> (WEIRD: pattern) with does-body scanning and
runtime patching via _DOES_PATCH_
- Implement CATCH/THROW exception handling using wasmtime trap
mechanism with stack pointer save/restore
- 232 tests passing
Rename ABOUT_FORTH.md to FORTH.md and rewrite to cover Forth's unique
position as simultaneously low-level and high-level, where Forth is used
today (Philae lander, Open Firmware, embedded systems), and why Forth
maps naturally onto WebAssembly's stack machine architecture.