changePixel warns you when an attempt is made to change to a nonexistent element

hopefully instead of shitting itself and dying with the blank screen

mods/changePixelDebug.js

@@ -0,0 +1,9 @@
+doLog = true;
+oldChangePixel = changePixel;
+function changePixel(pixel,element,changetemp=true) {
+	if(!elements[element]) {
+		if(doLog) { console.error(`Something tried to change a pixel (${pixel.x},${pixel.y}) to nonexistent element "${element}"`) };
+	};
+	return false;
+	changePixel(pixel,element,changetemp);
+};