Much needed patch. Lot's of bug fixes!

It's been over a year since I've put out a patch for Coin Flipper. After the last patch, the game was completely finished, but it did still have a few problems. Since I was a really inexperienced game developer when I worked on Coin Flipper, there seem to be a lot of bugs and issues with the game that I was unaware of and/or did not know how to handle. So let's just say I almost puked when I went back to the Coin Flipper scripts. Anyway, I fixed a lot of bugs and I did a lot of optimazation: *BUG FIX: Resetting the game would give the player inflation coins. *BUG FIX: Fixed a bug where the player could navigate buttons with the keyboard and purchase upgrades that are not unlocked with spacebar. *BUG FIX: Fixed a bug that would cause achievements icons to disappear. *Made a change to the auto upgrade. It now purchases an upgrade every 5 seconds instead of every minute. *BUG FIX: Challenge tooltip would pop up in the wrong spot if the player quit a challenge. *BUG FIX: Active flip bonus did not work when getting a lucky coin. *BUG FIX: SUPER ACTIVE FLIPPER lucky coin bonus would apply to auto flipping. *BUG FIX: Attempting a challenge after completing it would cause the challenge to not be finished. *BUG FIX: A prestige upgrade tooltip was placed in the wrong position. *BUG FIX: The game would always open in fullscreen. Also made it that the resolution index would display the correct resolution upon entering the game. *Added letterboxing. You can now drag the window of the game and there will be black boxes appearing if you drag it outside the game resolution. *Did a lot of optimization. The game should not crash upon closing the game. *Made a few localization changes. As always, let me know if there are any more issues with the game!