3.0.0-dev.42

• f1fd709 doc: lazy load images on resources listing page (#2493)
• d71ea18 gui: fix scrolling for small content (#2491)
• 5d0ca3a Upgrade to pyglet==2.1.0 (#2487)
• 5e800f7 Rectify spritesheet (#2481)
• 0d0ee61 Bring Box closer to Rect standards (#2485)
• 26af9ff Bug fix for Rect and Box init helpers (#2486)
• 54b2cee Create a threading example (#2480)
• 8e0e1e7 Int rect properties (#2482)
• 91769e2 Bugfix: Expose capacity in Spritelist.clear (#2479)
• 729e1b2 fix opengl errors on raspberry (#2478)
• 8106891 Add font preview, fix giant snake, and start adding missing 3.0 content (#2432)
• 9d356b3 Rename load_system_fonts to load_kenney_fonts (#2476)
• c01c2ce Fix math point types (#2430)
• 4d65b60 Gui/blend text (#2459)
• 7aa25be gui(experimental): make scrollbars draggable (#2474)
• d4e124d updated (#2469) (#2470)
• 1b2b45c Merge branch 'development' of https://github.com/pythonarcade/arcade into development
• 2d4abb0 Version 3.0.0-dev.41 [skip ci]
• b031c96 Center shields.io elements in the README.md file and grammar fixes for multiple documents. (#2471)