added a type to Package and added GenericPackage

This forces you to use cast to if you want to force the package to have
a specific type

src/kernel/gps/GPS.hx

@@ -124,7 +124,7 @@ class GPS {
 	}
 
 	@:allow(kernel.net.Net)
-	private function handlePackage(pack:Package, dist: Float,iface: INetworkInterface) {
+	private function handlePackage(pack:Package<Noise>, dist: Float,iface: INetworkInterface) {
 		switch (pack.type) {
 			case GPSRequest:
 				if (!shouldRespond) return;