Two new Penn releases, in the usual place. 1.8.0p9 is just portability tweaks (for amd64 and installations with openssl 0.9.8)
1.8.1p4 provides several useful changes and features. Errors in matching switches to commands are ignored when the command is hook/ignored or hook/overriden, so you can now override a built-in command and provide your own switches. The @mailfilter attribute allows for automated filing of incoming @mail. New @prompt/@nsprompt commands allow creating "prompts" for clients that support them (tf).
There are also several new functions including: namegrab, namegraball, textentries, cdesc, cusers, cmsgs, cbuffer, cstatus, clflags, and numversion.