0.6.44

v0.6.42: patch release

- Make app.json the only source of truth for app version
- Fix qwerty keyboard key sizes (dynamic sizing with useWindowDimensions)
- Add scrollable symbol toolbar to qwerty keyboard view
- Fix code editor regression (remove undeclared state variables)
- Set JetBrainsMono as global default font, remove redundant declarations
- Remove FUNDAMENTALS header from course overview page