There are still various areas where bite-parser is in need of improvement or extension. Look at the GitHub issues for a not necessarily complete list.
Currently, development on bite-parser is not my main focus, but I welcome contributions; ideally in the form of a pull request on GitHub. Please allow me some time to react. For larger changes or more fundamental changes, it might be best to discuss these changes as part of an issue or discussion before putting a lot of effort into them.