You can get in touch with us through either IRC or email.
IRC
The official BitchX IRC channel is #bitchx on EFnet.
A presence is also maintained at #bitchx on freenode.
Note that you may not get an answer to your question immediately, but if you wait around then someone will generally get back to you.
Mailing List
The BitchX development mailing list is <bitchx-devel@lists.sourceforge.net>. New releases are announced on this list. Bug reports and patches are also most welcome.
Security Contact
Vulnerabilities and security issues can be reported to <security@bitchx.org>.