add settings to execlude a user or ip from being blacklisted.

[muhannad-hash]

I cloned the repo and added a custom settings to be able to execlude a user or ip from being black listed.
but I am unable to create a PR. I would be really happy to push my changes if you are interested.

[vsemionov]

Hi. Thank you, it would be a good feature to have. Can you please show me your changes, so I could review them? For example, you could post the diff here. Cheers!

[muhannad-hash]

diff.txt

this is my diff file, It has my changes along with black formatting.