-Added google play services (needed for some stuff)

-Added new screen resizing options, stretch_2d is removed, new much more flexible ones.
-Fixed bug in viewport (can create more instances in 3d-in-2d demo now)
-Can set android permissions and screen sizes manually in the export settings
-Changed export templates extension to .tpz (too many people unzipped the manually..)
-File dialog now ensures that the proper extension is used (will not allow to save without it)
-Fixed bug that made collision exceptions not work in 2D

scene/2d/canvas_item.h

@@ -195,6 +195,8 @@ public:
 	void set_block_transform_notify(bool p_enable);
 	bool is_block_transform_notify_enabled() const;
 
+
+	Matrix32 get_canvas_transform() const;
 	Matrix32 get_viewport_transform() const;
 	Rect2 get_viewport_rect() const;
 	RID get_viewport_rid() const;