Version 2.0

• Added store system
• Changed the save system to use tinyXML2

Version 1.9

• Added save system
• Make a menu system that makes more sense
• Fixed free health care

Version 1.6

• fixed tax math to prevent a divide by zero
• fixed enemy gen so that the enemy can have troops when we don't
• prevent our troops from going into negative
• remove extra health if we fight with no troops
• fixed error where you can have negative enemies
• fixed problem where nukes will change when using lasers
• fixed problem where user is told invalid input

Version 1.5

• Introduced Menu Class (ported version of pymenu)
• Introduced Player Class
• Added option to leave game
• Added taxes
• Added paycheck after 5 battles won
• Added debug option by running with --debug