Job results do not match standard

[sebastianfrey]

When executing the hello-world process from the demo server, results are returned as follows:

{
   "id": "echo",
   "value": "Hello @ogcapi-js!"
}

I am not sure, if this response conforms to the standard. As I understand the standard correctly, results should be returned as specified by the results.yaml schema. If I read that schema correctly, a flat object shall be returned, which keys are matching the parameter names specified in the process's outputs descriptions. That means, the hello-world process should return the following results instead:

{
  "echo": {
     "id": "echo",
     "value": "Hello @ogcapi-js!"
   }
}

[sebastianfrey]

I also have noticed, that when I execute a job asynchronously, pygeoapi returns null instead of a job description object.