improved geometry debloating, also apply on skin changes

src/pocketmine/entity/Skin.php

@@ -87,4 +87,17 @@ class Skin{
 		return $this->geometryData;
 	}
 
+	/**
+	 * Hack to cut down on network overhead due to skins, by un-pretty-printing geometry JSON.
+	 *
+	 * Mojang, some stupid reason, send every single model for every single skin in the selected skin-pack.
+	 * Not only that, they are pretty-printed.
+	 * TODO: find out what model crap can be safely dropped from the packet (unless it gets fixed first)
+	 */
+	public function debloatGeometryData() : void{
+		if($this->geometryData !== ""){
+			$this->geometryData = (string) json_encode(json_decode($this->geometryData));
+		}
+	}
+
 }