z0.5 update: stability/bugfixes

Fixes

• Fixes drawing at the edge of the canvas. Previously, your drawing state would be lost as soon as the mouse/stylus traveled outside the canvas. Now it is retained; better for scribbling furiously!
• Fixed a long standing issue with certain stylus/tablet drawing setups that would cause weird radiating lines whenever you tried to draw.
• Actually makes 1-pixel brushes work. Previously, the 1px round brush would simply not work, and the brush guides for both round and square brushes at 1px were misleading
• Not fun for you, but fun for me: lots of simplification of the drawing state detection code

Future Plans

• UI overhaul
• Spraycan improvements:
  • Currently, the spray pattern stays static until you change the brush in some way. I’d like to have it update during drawing to give you a truly randomized spray
  • The spray pattern can generate with no noise pixels, especially at low brush sizes
• QoL around automatic image backups, saving custom palettes, etc