First update after jam!

I want to thank everyone who liked and supported Arcane Beak, who came in second place at VimJam #5. In this first update I made adjustments based on people's feedback:

• With mouse-only control, simply hold the left button and the player moves forward in the direction of the button.
• Option to play with keyboard (W,A,S,D) + mouse.
• Magnet item does not cancel other upgrades and has an instant effect.
• Minor bug fixes.

I intend to make new improvements when I have time, add new stages, items and bosses.