[FEATURE] Author: nil?

[gnohz]

Describe the feature you want

• Is it possible to disable the author?
• Another issue: I used ox-hugo to convert org file to markdown. Then I have
  author = ["author"]
  instead of
  author = "author"
  However, the first one gives me an error message:
  execute of template failed: template: partials/plugin/link.html:7:16: executing "partials/plugin/link.html" at <safeHTML>: error calling safeHTML: unable to cast []string{"author"} of type []string to string

[victor-pogor]

Hi @gnohz.

I'll take a look at this, but it seems that we need to add the multiple authors support.

There is a similar pull request (#153) that describes the same problem.