state: convert ElementState to flags, easily check legal attr placement master

oops forgot about that, weren't using it anyways :D

token: splat (@), for PS splatting

compiler: remove unused stuff

tests: shortcuts for common tokens

tests: slightly nicer appearance

tokenizer mostly finished, all tests passing

tests: case for <div

compiler: barebones following https://serhii.io/posts/writing-your-own-lexer-with-simple-steps