This update includes macOS Big Sur support, and a few other features/fixes.

Enhancements:

• Keyboard shortcut for 'Fill' brush
• Right mouse click shortcut for 'Eraser'
• Added 'Border Padding' option to sprite sheet exporter for increased compatibility

Changes:

• Increase 'Force Specific Colors' to allow up-to 8 colours

Bug Fixes:

• Fixed macOS Big Sur compatibility

You can see the full changelog at the official documentation.