3D Physics and Other Stuff

-=-=-=-=-=-=-=-=-=-=-=-=-=

-New Vehicle (Based on Bullet's RaycastVehicle) - Vehiclebody/VehicleWheel. Demo will come soon, old vehicle (CarBody) will go away soon too.
-A lot of fixes to the 3D physics engine
-Added KinematicBody with demo
-Fixed the space query API for 2D (demo will come soon). 3D is WIP.
-Fixed long-standing bug with body_enter/body_exit for Area and Area2D
-Performance variables now includes physics (active bodies, collision pairs and islands)
-Ability to see what's inside of instanced scenes!
-Fixed Blend Shapes (no bs+skeleton yet)
-Added an Android JavaClassWrapper singleton for using Android native classes directly from GDScript. This is very Alpha!

main/performance.h

@@ -69,6 +69,12 @@ public:
 		RENDER_TEXTURE_MEM_USED,
 		RENDER_VERTEX_MEM_USED,
 		RENDER_USAGE_VIDEO_MEM_TOTAL,
+		PHYSICS_2D_ACTIVE_OBJECTS,
+		PHYSICS_2D_COLLISION_PAIRS,
+		PHYSICS_2D_ISLAND_COUNT,
+		PHYSICS_3D_ACTIVE_OBJECTS,
+		PHYSICS_3D_COLLISION_PAIRS,
+		PHYSICS_3D_ISLAND_COUNT,
 		//physics
 		MONITOR_MAX
 	};