+2014-09-04
+ * added custom graphics property "game.tile_size" to define in-game tile
+ size (this defines the tile size actually displayed on the playfield);
+ tile graphics will either be scaled to the defined game tile size or
+ have to be specified with the same image size (using ".tile_size")
+
+2014-09-01
+ * added custom graphics property ".tile_size" to define tile image size
+ for game element graphics (like "custom_1.tile_size"); non-standard
+ sized images will then be scaled accordingly to standard tile size
+
+2014-08-30
+ * fixed music still being played in Android version when in background
+