added abilities= keyword "devoid"

abilities=haste,flying,devoid
would make a flying haste colorless creature.

projects/mtg/src/GameObserver.cpp

@@ -638,6 +638,21 @@ void GameObserver::gameStateBasedEffects()
                     zone->cards[c]->cardistargetter = 0;
                 }
             }
+
+			///while checking all these zones, lets also strip devoid cards of thier colors
+			for (int w = 0; w < zone->nb_cards; w++)
+			{
+				MTGCardInstance * card = zone->cards[w];
+				for (int i = Constants::MTG_COLOR_GREEN; i <= Constants::MTG_COLOR_WHITE; ++i)
+				{
+					if (card->has(Constants::DEVOID))
+					{
+						card->removeColor(i);
+					}
+				}
+			}
+
+
         }//check for losers if its GAMEOVER clear the stack to allow gamestateeffects to continue
         players[d]->DeadLifeState();
     }