Post-release patch

- Fix #1295, Fix #1401 - Drag'n drop to merge by default, you still can go to old click + click mode in Settings
- Fix #1395, Fix #1400 - Fix audio issues
- Fix #1403 - Fix performance issues
- #1368 - Added some animations on merge
- Improved Dutch (NL) translations

Please comment if you still experiment those bugs or if you get some others :)

Check out roadmap for next updates: https://bugs.dysnomia.studio/projects/alchemistry/roadmap