Allow deselection of an entity by clicking within its bounding box

Clicks that hit the bounding box of any entity were unable to deselect, since
the canvas was not listening for mousedown events. It now is.

macrovision.js

@@ -491,6 +491,7 @@ function testClick(event) {
         const oldDisplay = target.style.display;
         target.style.display = "none";
         const newTarget = document.elementFromPoint(event.clientX, event.clientY);
+        console.log(newTarget);
         newTarget.dispatchEvent(new MouseEvent(event.type, {
             "clientX": event.clientX,
             "clientY": event.clientY
@@ -594,6 +595,7 @@ document.addEventListener("DOMContentLoaded", () => {
     })
 
     world.addEventListener("mousedown", e => deselect());
+    document.querySelector("#display").addEventListener("mousedown", deselect);
     document.addEventListener("mouseup", e => clickUp(e));
     document.addEventListener("touchend", e => { 
         console.log(e)