Patch notes 10/1/21

Character editor fixes:

• Fixed character editor crashes (particularly around hitbox manipulation)
• Improved usability of hitboxes
• Fixed issues with preview images in the character editor (not saved correctly, file browser can lock up)
• Added missing "unbind all" functionality in the animation rig details pane
• Fixed rendering bugs (sprites don't display without an animation rig in the timeline)

General improvements:

• Added loading screens