Application:
V Migrate from .Net Framework 4.7 to .NET 9

Functionality:
- Context menu in symbol navigator
V Delete symbols before/after selected
- Shift all symbols on code line (change symbol codes)
- Specify starting code (extends the shift)
- Ability to make monospaced font a variable width one
- Undo/Redo
- Image import from a file
- Import from a text array
- Rectangle selection to mass-paint, shift and mirror pixels
- "Packed" fonts export

Bugs: