Refactored reading and writing TGA images for Image2D. Double checked const usage in Color, Image2D, Lexer, and RenderWindow. Changed TileHex to not specify that tile size is specified in pixels (i.e. more generic). Changed Megacorp to use correct file paths on new dev system.
Refactored drawing functionality out of TileHex and TileMapHex into TileMapScanner hex.
Renamed TileHex, TileMapHex, and TileMapScannerHex to HexTile, HexTileMap, and HexTileMapScanner.