- Add: add file logging to lektord, the rotate operations are done by lektord to avoid running out of space if someone try to dos lektord...
- Add: Qt5 module for the player, it's the new default (will replace sdl2!)
- Add: hook to automatically upgrade the database scheme if needed
- Add: multi-add IDs, create a list with stb_ds and add its content in the queue, the adds are batched 10 per 10. When adding multiple times the same kara ID, it is only added once
- Add: dry-update command to only refresh the available kara in Kurisu and don't download them
