mod_smacks: Remove extra optional from sm element Since XEP-0198 version 1.6.3, the optional and required children of sm in stream:features have been removed entirely. They already weren’t specified before, and were only leftover from a very old version in the XML Schema. Fixes #1963

module:log("error", "mod_pep_plus has been renamed to mod_pep, please update your config file. Auto-loading mod_pep...");
module:depends("pep");