use a daemon thread for the internal http server + enable multithreading again
use a daemon thread for the internal http server + enable multithreading again

link_checker.py never exists with a non-daemon thread handling the internal webserver used to find dead links in files.

I thought multithreading was a problem, but it turns out it's not. That's why it's enabled in all cases again.

Delphinator/link_checker