Collisions, live dragging working really well now, somewhat usable at this point

Author: STRML

example.html

@@ -21,6 +21,8 @@
       .placeholder {
         background: red;
         opacity: 0.3;
+        user-select: none;
+        z-index: 0;
       }
       .gridItem.react-draggable-dragging {
         transition: none;