Entities now Extend Tile
made tile an abstract class
Merge branch 'master' of https://github.com/alecajuice/Hivolts.git
Merge branch 'master' of https://github.com/alecajuice/Hivolts.git
made tile class
Merge branch 'master' of https://github.com/alecajuice/Hivolts.git
gui and gridpanel updates