Fixed bug where money could be negative
Added aim analog stick, which is being tested to see if it is more ideal for aiming then just clicking.
Made different bitmap fonts of different sizes so they don't have to be scaled at runtime.
Added currently useless pause button.
Preliminary work on options screen.
Began work on cleaning up the upgrade GUI.
Made screen stretch, as fit screen doesn't seem to work well for the iPhone.
Temporarily disabled music until the options screen is complete.