Modrinth strongly encourages (via the following response header) that
access to their services be done with a uniquely identifying user-agent
string.
> "x-user-agent-notice": "!!!!! Hey, you! Yes, **you**! You need to
> change your User-Agent ASAP or you may be blocked from using
> Modrinth's services! For more information see the documentation:
> https://docs.modrinth.com/api-spec/#section/User-Agents !!!!!"
The one added here follows the documentation recommendation for the
"best" example of a user-agent string.
