New update (v1.1)

Thanks for the warm feedback and inputs for 'Upward'!

Here is an update that includes some feedback from players and the PICO-8 community:

• Save game: Game will now autosave each level and you can quit/resume the game any time now at the point you left off.
• Mouse/touch controls: Game can now be fully controlled via mouse/touch (also added small clickable reset button, in case player gets stuck). Since the game has always been a one-tap game, we now have a mobile-ready PICO platformer!
• Difficulty curve: made some adjustments in the first few screens to make difficulty curve a bit less steep.
• More changes: made bullet hitboxes more accurate and thus a little bit more foregiving.