Minor improvements/maintenance.
Added upgrade.js, and started upgrade state design.
Starting temp design of upgrades state.
Added purchase button and more upgrade detail.
Starting to add upgrade dividers.
Added basic "Upgrades" divider
Added floating text.
Added alpha change to float text.
Added background to upgrade description.
Changed upgrade design similar to states.
Made roundSelect the default stage, and made the 'goto' stage open by
default for easy access to all states.
Lowered the 'bottom' property on the scroll bar.
Minor change to test upgrades.
Added ScrollField to gui.js
Rearranged some stuff.
Added a TODO file.
Added pin fading.
Added pin count to PinShooter.
Made vars in 'game' public and created 'dogpantzTest' which contains an
inherited version of 'game' that holds the previous game state.
Added a top constraint for the stages scroll area.