anchor.diff:          // Start our chain of methods
           findSelectionMatches();
           function findSelectionMatches() {
  +          // Start our performance check (70ms for 200 1024x1600 images)
  +          console.time('findSelectionMatches');
  +
             // Find our sets of images to update
             var compareSetEls = document.querySelectorAll('[data-compare-set]');
   
  
positive.code:             //   Extract image from 2nd canvas via `ndarray`
              //   Use web workers
              //   Requesting server do it via `get-pixels` and `save-pixels`
              // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/rect
              context.rect(targetArea.left, targetArea.top, targetArea.width, targetArea.height);
              context.clip();
  
negative.code: 
            // Append aggregate content to DOM
            resultsEl.appendChild(resultsDocFrag);
  
            // End our performance check
            console.timeEnd('bulkUpdateSelection');
          }
        });
  