Devs: added docs and todo about short living LKI, LKI and current problems;

Mage/src/main/java/mage/players/PlayerImpl.java

@@ -4484,6 +4484,9 @@ public abstract class PlayerImpl implements Player, Serializable {
                         }
                     }
                 }
+                // TODO: must be replaced by game.getState().processAction(game), see isInUseableZoneDiesTrigger comments
+                //  about short living LKI problem
+                //game.getState().processAction(game);
                 game.applyEffects();
                 break;
             case HAND: