Link restriction functionality

README.md

@@ -79,6 +79,8 @@ http://sebastien.drouyer.com/jquery.flowchart-demo/
     * __toConnector:__ ID of the connector the link goes to.
     * __toSubConnector:__ (optional) If it is a multiple connector, which subconnector is it.
     * __color:__ Color of the link. If undefined, default value is the same as `defaultLinkColor`.
+
+  * __linkRestrictions:__ (optional, default: `[]`) If not empty, define which links are allowed. Same structure as `links`.
 
   * __operatorTypes:__ (optional) Hash allowing you to define common operator types in order to not repeat the properties key. Key define the operator's type ID and the value define the properties (same structure as `data.operators.properties`).
 

jquery.flowchart.css

@@ -106,7 +106,8 @@
 
 .flowchart-operator {
     position: absolute;
-    width: 140px;
+	min-width: 140px;
+	max-width: 250px;
     border: 1px solid #CCCCCC;
     background: #FAFAFA;
     pointer-events: initial;