[Feature Request] effectOutputs data to be accessed like customVariables paths

[CKY-]

Describe the solution you'd like
when a effectOutput contains json information it would be nice if it were accessible with the path

{
  "slideshow": {
    "author": "Yours Truly", 
    "date": "date of publication", 
    "slides": [
      {
        "title": "Wake up to WonderWidgets!", 
        "type": "all"
      }, 
      {
        "items": [
          "Why <em>WonderWidgets</em> are great", 
          "Who <em>buys</em> WonderWidgets"
        ], 
        "title": "Overview", 
        "type": "all"
      }
    ], 
    "title": "Sample Slide Show"
  }
}

$effectOutput[name, slideshow.author]

[dennisrijsdijk]

This currently works only for the effect output shorthand ($&name) but not for the full $effectOutput[name]