Application:
- Consider migrating to WPF in order to make DPI aware UI
V Option to hide symbols list to narrow the side bar
V Buttons to select previous/next symbol with shortcuts
- Custom cursor showing painting size

Functionality:
V Fix straight (Ctrl/Shift) lines paint to reset coordinate on mouse-up even if Ctrl/Shift is still held
V Command to make all blank symbols zero-width
- Alt-Scroll to change painting size

Bugs: