Changes:
- limited some cards in endless mode to make it more stable
- score can now go beyond the integer limit
- highscores in the steam leaderboard can now store up to the double max integer value
Fixes:
- fixed a bug that caused the game to crash in endless mode
- fixed a bug that could cause a long delay before adding the combo to the score
- fixed a bug that allowed choosing difficulties beyond what is possible which prevented enemies from spawning