* Webserver overhaul (@Baklap4)
* Not enabled on Windows builds.
* Add song paths in game (@nieknooijens)
* Configurable playlist duration (@nieknooijens)
* Audio system overhaul (@Lord-Kamina)
* Added Pro Mode to the drums (@earlye)
* Metadata caching (@Baklap4)
* Changing languages from within the menu (@Baklap4)
* Windows installer (@Baklap4)
* Improved frequency detection while singing (@Tronic)
* Note graph scaling: Static, dynamic (@twollgam)
* Difficulty levels for singing (@isadofschi)
* Proper support for Hi-DPI displays (@Lord-Kamina)
* Auto-merging of duet tracks (@Lord-Kamina)