MC1.21-0.9.2

Change set since MC1.21-0.9.1:

50e4292: Bump version to 0.9.2
bb619c6: Add internal rotation to picked projector items
4fe673a: Always update slide state of current and next slide
c007615: Add delay to projector block powered state changes
b562cf2: Mark dirty when items in projector block entity have changed
ec6bc6d: Use native order byte buffer for native image