Jinja2html

* Rewrote core logic (again) to use libraries that support async
* Replaced `watchgod` with `watchfiles`
* Replaced web servers (`websockets` & python's `socketserver`) with `starlette` & `uvicorn`
* Renamed `--blacklist` CLI flag to `--ignore`
* Added new `--debug` CLI flag to toggle verbose logging
* Added a proper unit test suite
* Miscellaneous bug fixes and general improvements

* Near total rewrite of core logic for improved robustness/maintainability
* Reworked CLI arguments for clarity, added new options to target specific input/output folders
* Replaced [watchdog](https://github.com/gorakhargosh/watchdog) dependency with [watchgod](https://github.com/samuelcolvin/watchgod)
* Bumped dependency versions
* Miscellaneous usability improvements and bug fixes

* Improvements to robustness and edge-case handling
* Support for python 3.9, minimum python version is now 3.8+
* Bumped dependency versions

* fixed broken console scripts