[tokenizer] renamed the self-closing tags state, moved it to its own function
[tokenizer] commented out support for entities in attributes

requires adding a new event to make this work, so delayed for now
[readme] updated benchmark results

switched the results to @AndreasMadsen's htmlparser-benchmark
[bench] removed internal benchmarks

in favor of htmlparser-benchmark
[parser] fixed whitespace
[parser] moved common logic to _updatePosition function
[tokenizer] renamed IN_ATTRIBUTE_NAME_* states, improved formatting
[tokenizer] re-added the carriage return as whitespace

fixes #62

apparently Google's gumbo-parser does behave this way:
https://github.com/google/gumbo-parser/blob/101726c50e172e45be6002c51b85
e45f27f0c2c6/src/tokenizer.c#L322