Canvas rewrite

-Full rewrite to use Canvas instead of SVG
-Restructured backend

js/spritelib.js

@@ -0,0 +1,10 @@
+'use strict';
+
+export class SpriteBounds{
+    constructor(x, y, width, height){
+        this.x = x;
+        this.y = y;
+        this.width = width;
+        this.height = height;
+    }
+}