xflow 0.1.1

XFlow implementation
Documentation
{
  "id": "asd",
  "name": "asd",
  "version": 1,
  "requirements": [
    {
      "xtype": "flow",
      "version": 1
    },
    {
      "xtype": "object",
      "version": 1
    },
    {
      "xtype": "flox",
      "version": 1
    }
  ],
  "variables" : {
    "input" : [
      {
        "name"  : "UserName",
        "vtype"  : "string",
        "value" : ""
      }
    ],
    "output" : [
      {
        "vtype" : "boolean",
        "name" : "ReturnValue"
      }
    ],
    "local" : [
      {
        "value" : "false",
        "vtype" : "boolean",
        "name" : "ReturnValue"
      }
    ]
  },
  "nodes": [
    {
      "id": 1,
      "nodetype": "flow",
      "action": "start",
      "label" : "Start",
      "parameters": {}
    },
    {
      "id": 2,
      "nodetype": "object",
      "action": "create",
      "label" : "Create User",
      "parameters": {
        "object": "User"
      }
    },
    {
      "id": 3,
      "nodetype": "object",
      "action": "setattributes",
      "label" : "Set name",
      "parameters": {
        "object": "User",
        "attributes": {
          "name": "Joe Blow"
        }
      }
    },
    {
      "id": 4,
      "nodetype": "object",
      "action": "save",
      "label" : "Save User",
      "parameters": {
        "object": "User"
      }
    },
    {
      "id": 5,
      "nodetype": "flow",
      "action": "end",
      "label" : "End",
      "parameters": {}
    }
  ],
  "edges": [
    [ 1, 2 ],
    [ 2, 3 ],
    [ 3, 4 ],
    [ 4, 5 ]
  ],
  "branches" : [
  ]
}