mod_pep: Advertise base pubsub feature (fixes #1632)
Noticed while discussing feature discovery in Gajim
Thanks lovetox
For full information on our dependencies, version requirements, and
where to find them, see https://prosody.im/doc/depends
If you have luarocks available on your platform, install the following:
- luaexpat
- luasocket
- luafilesystem
- luasec