- [x] utf8.char - [x] utf8.charpattern - [ ] utf8.codepoint - [x] utf8.codes (implemented by #318) - [x] utf8.len - [ ] utf8.offset - [ ] bit32.arshift - [x] bit32.band (implemented by #318) - [ ] bit32.bnot - [x] bit32.bor - [ ] bit32.btest - [x] bit32.bxor - [ ] bit32.extract - [ ] bit32.lrotate - [ ] bit32.lshift - [ ] bit32.replace - [ ] bit32.rrotate - [ ] bit32.rshift