Recognise NickServ authentication on gimpnet

[palvarez89]

I believe in Gimpnet NickServ replies with the following privnotice when you are connected:

Password accepted - you are now recognized.

This case is not considered in def _handle_privnotice in class NickServ. I wonder if there is another way for making this more generic for other networks?

[bd808]

I am not aware of any standard for NickServ across multiple IRC networks. The current coding in this library is very Freenode specific, but I would not be opposed to pull requests which make things work on other networks.

[palvarez89]

Thanks for answering so fast. I'll try to find some time soon to propose some patches for adding support for Gimpnet, which is the only other network my bot uses. I will probably have a look at the most common networks.

Regarding making it more generic, I just thought that maybe a user mode might change once it's registered, but I don't know anything (yet) about this.