updated README.md with comment about parsec
updated implementation of choice combinator
fixes for merging OK and test for many1
converted remaining test to new parser type definition
removed commented out implementation of sepBy1
line ending shenanigans
checking for non-state object input and fix to preserving error messages in bind
added label test and labels to basic parsers
added run method and fix for label
tests for lift and bind
removed commented out implementations from promiseM