4.9.1

Fixes

• Fix crash because of gamma smooth transition logic
• Fix crash when Sensor Mode would update brightness on a non-main thread
• Avoid app entering a not responding state when in Location mode and waking the screen

Improvements

• Make sure Gamma never goes below 0.08 on brightness 0 to retain visibility
• Allow press-and-hold detection to be disabled for users that encounter problems with it
• Remove unused serial-port and volume-based sensor options