Been a hot minute since I last updated the game sorry, was doing IRL stuff ._."

Reworked the shop and upgrade panels
Pressing escape while shop or upgrades panels are open will now close them instead of just pausing the game 

Fixed the fullscreen toggle on the main menu so it actually works now 

Reverted the time between waves to be 20 seconds from 10 

Railgun sprites have now been fully replace with RPG (RPG is a little buggy when being switched to from the boomerang) 

Enemy spawn interval now slowly decreases as you get further into wave mode

Did some other stuff I prob forgor ¯\_(ツ)_/¯