Added stub for relay module.
Added _privmsg to core and updated core to use it instead of manually sending PRIVMSG everywhere.
Updated mod auto to use core$privmsg function.
Updated examples and README to use core$privmsg function.
Removed hooktest module.
Updated mod info to use core$privmsg function.
Updated mod log to use core$privmsg function.
Updated mod remind to use core$privmsg function.
Updated mod scheduler to use core$privmsg function.
Updated mod scraper to use core$privmsg function.
Marked todo task as done.
Updated changelog.