Allow symlinks, this should fix #5204

[govertbuijs]

Proposed changes:

• ...

Status (please check what you already did):

• added some tests for the functionality
• updated the documentation
• updated the changelog (please check changelog for instructions)
• reformat files using black (please check Readme for instructions)

[claassistantio]

All committers have signed the CLA.

[tmbo]

Looks great ⭐

Before we can merge this we need to make sure the change is documented. Do you mind creating a changelog entry? You need to create a file in /changelog describing in a sentence what the change does

[govertbuijs]

Done

[tmbo]

Thanks a lot for that change to make the file detection better 🚀