New piece rotation and highest multiplier indicator

There's a more interesting piece rotation system for spawning blocks. I think this new system fits the puzzle of making combos better. You'll get a double block  and two drills in sequence for each color. The blocks that come with the drills have their own color rotation, so they may or may not come with the same color as the drill. Since drills of different color than the previous take more time to spawn, linking drills is now more valuable.

Example: 2 blue blocks, one blue drill with green block, one blue drill with red block. Two purple blocks, one purple drill with purple block, one purple drill with red block.

There is now an indicator showing your best multiplier. I hope this makes incentive for players to reach higher combos.