Return null or empty string when no response was given on a field

[tjcorr]

Is your feature request related to a problem? Please describe.

When an optional field is left blank, the final markdown contains No response . This gets picked up and parsed as ordinary text by the library:

"field":{"title":"field","heading":1,"content":["*No response*"],"text":"*No response*"}

Describe the solution you would like

Ideally, it would be preferable that an empty response is detected and replaced with a null or empty string.

Describe alternatives you have considered

No response

Additional context

No response

[PatrickHeneise]

Thanks @tjcorr, that makes sense. Do you think you can add a PR for this? I'm pretty swamped at the moment.