- Fix a small bug that `best30` of API cannot have scores whose songs are not in database
- At present the setting file can be a module or a file with some of options
- Limiter can have multiple rules together now
- Add Course Mode
- Add support for downloading additional files
- Add support for `skill_fatalis` (Hikari booms your world.)
- Delete my hair X<
> WHERE IS MY TAIRITSU ?!
> Some other things are not supported now, such as... the feature which is one line above.
- Code refactoring
- Fix a bug that the other player will not become the host of the room at once, when the player disconnect in link play.
> Maybe add many unknown bugs. XD
> The song database `arcsong.db` will not used in the future. You can use a tool in `tool` folder to import old data.
- Code refactoring
- Update the song database
- Fix a bug of the friend system which arose in the last version
- Fix a bug of duplicate calculating finishing states when players finish playing the chart in Link Play.
