Feature: Custom Localhost Name or Disable Rate Limiting

[EmpireJones]

I'm running this script against a server on my local machine, but I'm using a domain name (e.g. http://example.dev), which is included in the URLs for the build.

I'd like to be able to run linkcheck without the rate limiting; however, that currently only works for localhost and 127.0.0.1.

Should we add the ability to use a custom "localhost" name, or disable the rate limiting? It seems like the current behavior is needlessly dragging its feet.

Thanks!