Standalone EXE v1.3.1

Now with most of the buttons working
Working Buttons:

• 0
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• .
• CHS
• Enter
• y to the x
• 10 to the x
• 1/x
• divide
• X
• <-
• XY reverse
• Roll down
• Square root
• G -> Roll up
• G -> x Squared
• F -> RAN#
• G -> %
• F -> pi