parse: Pass a context to the parse function

parse: Have parse_text handle contexts properly

parse: Have parse_bool handle contexts properly

tests: Clarify test name in test_clear_notes

parse: Use an error context for clear_notes

src: Pass a parent context to skip_note

parse: Have skip_note create a PARSE_NOT ParseContext

parse: Allow attaching a ParseContext to a ParseErrorException

parse: Add parse contexts for later error reporting

tests: Fix ParseError exception tests not wroking

tests: parse: Remove unused insert_random

tests: parse: Clean up some includes

tests: parse: Move note tests to their own files

tests: parse: Move text tests to its own file

tests: parse: Move bool tests to its own file

tests: Move parse to its own directory