gpg: Disable use of incompatible library 'gnupg'.
Add python-gnupg as a dependency on Travis.
Misc: Fix output of @version.
Fix import of supybot.gpg if gnupg is not available.
Added SQLAlchemy in INSTALL.md.
Socket: Trigger reconnect if socket file number has been set to -1.
Fix infinite recursion in Aka when calling a command in Aka which has a
prefix that is another Aka command.
Fix precedence of shorter Aka commands in Aka.
Tell the users to use the list command if they use the help command without any arguments. Closes GH-516.
Add certfp support. Closes GH-468.