V2 - Stage and Bitmap
V3 - Game and Grid
V4 Gem initialization
V4.5 Move Gem
V5 - Fall
V6 - Keyboard
V7 - Refactor game
V8 - Drop
V9 - Handle Matches
V9.5 - Handle falling
FIX V9.5 - Handle falling
V10 - Random Gem
V11 - Upgrade Gems
V12 - Gem Group
V12.5 - Move GemGroup
V12.10 - Rotate GemGroup
V12.15 - GemGroup limits
V12.20 - Drop GemGroup
V13 - Scoring
V14 - Game Over