Let msgpack work on any msg property

parsers/msgpack/70-msgpack.html

@@ -1,5 +1,9 @@
 
 <script type="text/x-red" data-template-name="msgpack">
+    <div class="form-row">
+        <label for="node-input-property"><i class="fa fa-ellipsis-h"></i> <span data-i18n="node-red:common.label.property"></span></label>
+        <input type="text" id="node-input-property" style="width:70%;"/>
+    </div>
     <div class="form-row">
         <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
         <input type="text" id="node-input-name" placeholder="Name">
@@ -18,7 +22,8 @@
         category: 'function',
         color:"#DEBD5C",
         defaults: {
-            name: {value:""}
+            name: {value:""},
+            property: {value:"payload",required:true}
         },
         inputs:1,
         outputs:1,
@@ -28,6 +33,12 @@
         },
         labelStyle: function() {
             return this.name?"node_label_italic":"";
+        },
+        oneditprepare: function() {
+            if (this.property === undefined) {
+                $("#node-input-property").val("payload");
+            }
+            $("#node-input-property").typedInput({default:'msg',types:['msg']});
         }
     });
 </script>

parsers/msgpack/package.json

@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-msgpack",
-    "version"       : "1.1.3",
+    "version"       : "1.2.0",
     "description"   : "A Node-RED node to pack and unpack objects to msgpack format",
     "dependencies"  : {
         "msgpack-lite"   : "^0.1.26"