This script sets the topic in a channel with the !topic command.
Additionally, it contains examples of setting a specific topic, e.g., if a
stream is online/offline with the !on and !off commands.
!topic topic set topic in channel to topic
!on set preconfigured "on" topic in channel
!off set preconfigured "off" topic in channel
Enable for a channel with: .chanset #channel +topic
Disable for a channel with: .chanset #channel -topic