Merge pull request #312 from ArFe/master

add the possibility to override the node class with multiple space separated classes

Author: jerosoler

src/drawflow.js

@@ -1187,7 +1187,7 @@ export default class Drawflow {
     node.setAttribute("id", "node-"+newNodeId);
     node.classList.add("drawflow-node");
     if(classoverride != '') {
-      node.classList.add(classoverride);
+      node.classList.add(...classoverride.split(' '));
     }
 
     const inputs = document.createElement('div');
@@ -1311,7 +1311,7 @@ export default class Drawflow {
     node.setAttribute("id", "node-"+dataNode.id);
     node.classList.add("drawflow-node");
     if(dataNode.class != '') {
-      node.classList.add(dataNode.class);
+      node.classList.add(...dataNode.class.split(' '));
     }
 
     const inputs = document.createElement('div');