v1.5.0

Version 1.5:

 - Added splash screen
 - Fixed crash with Layout buttons
 - Fixed execute items
 - Updated copyright
Arduino project:
 - Reduced encoder message rate and increased acceleration
 - Added settings screen and key brightness
 - Encoder turning now wakes the display
 - Improved encoder move preview
 - Fixed encoder switch reading bug
 - Added startup animation
 - Inputs from setup/debug pages are no longer sent to the USB host
 - Other tweaks and fixes