Ensure that set_height doesn't cash a string

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pixelmanipulator",
-  "version": "4.6.0",
+  "version": "4.6.1",
   "description": "Run any cellular automata on an html5 canvas.",
   "main": "pixelmanipulator.js",
   "repository": "[email protected]:Lazerbeak12345/pixelmanipulator.git",

pixelmanipulator.js

@@ -17,7 +17,7 @@
 // Concerning the function commments, # is number, [] means array, {} means object, () means function, true means boolean and, "" means string. ? means optional, seperated with : means that it could be one or the other
 (function(g) {
 	'use strict';
-	var pxversion="4.6.0";
+	var pxversion="4.6.1";
 	function pix(require,exports,module) {//done like this for better support for things like require.js and Dojo
 		/*function ret(v) {
 			return (function() {
@@ -43,14 +43,14 @@
 			},
 			set_width:function(value){
 				innerP.canvas.width=value
-				innerP._width=value
+				innerP._width=value-0
 			},
 			get_height:function(){
 				return innerP._height
 			},
 			set_height:function(value){
 				innerP.canvas.height=value
-				innerP._height=value
+				innerP._height=value-0
 			},
 			row:0,
 			//__oldDraw:false,