This is release 2.0.0.
It contains:
- New and improved filtering code with less bugs and more reliability.
- A new dark mode that automatically triggers based on whether the browser is also in dark mode.

This update contains:
- A gain function for the voice enhancer feature. This allows the user to control how much the frequencies used by human speech gets boosted by.
- A reset button to reset parameters to their default values.
- UI polishing.
- Bug fixes.

Bug-fixes and code cleanup.