v1.0.1 is released.

Changelog:

• Mutation rates can be adjusted in the Research Journal
• Run simulation at 0.5x, 1x, or 2x  speed
• Pick up animats with left click
• Change # of animats in the bottom left corner
• Walls removed from arena boundaries
• More tutorial text added to GUI to explain controls
• Better MacOS support
• Textures changed from URP to Unity standard format, fixing a bug that caused some objects to be invisible