Cosmonauter v0.9.4

I was a bit sick for the past week, so haven't really had a chance to work too much on the game. Now I am almost back to normal so I am happy to announce that the project is back on track. This here is probably going to be the update before the final version for itch. Be sure to keep an eye out for any solum cosmonauter updates right in this here "hub" post.

v0.9.4
* improved menu and ui graphics
* improved audio code; also added all music tracks
* tweaks and improvements to certain animations
* new arcade level
* improved arcade high score system
* various bug fixes
* added music credits