Merge pull request #47 from tmickel/feature/stackclick

Add stack click event handler

src/index.js

@@ -55,6 +55,9 @@ function VirtualMachine () {
                 id: e.blockId
             });
             break;
+        case 'stackclick':
+            instance.runtime.toggleStack(e.blockId);
+            break;
         }
     };
 
@@ -76,6 +79,9 @@ function VirtualMachine () {
                 id: e.blockId
             });
             break;
+        case 'stackclick':
+            instance.runtime.toggleStack(e.blockId);
+            break;
         }
     };
 }