- Add support for the skill 'skill_maya'
- Fix a bug that some characters' skill cannot display proper values in world mode progression
- Fix a bug that 'skill_mithra' results in adding `prog` value instead of world mode progress
- For Arcaea 4.7.0
- Add support for beyond gauge boost
- Add support for beyond chain maps
- Add support skills of uncapped ilith and mika
- Unlock four chars and uncapped ilith
- Some changes in some values' algorithms
- Add song names for getting the score list (For API)
- Try to ensure thread safety in Link Play (twice again)
- Small change about database timeout
- Have a try to use `nginx` and `gevent` (Yes. I ensure it works well. This will not be viewed as a formal and necessary update.)
- 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.
