2.1.0 Added - message-ids support - server-time support - Configurable channel name, kick reason, topic and username length limit Fixed - INVITE returns ERR_NOSUCHCHANNEL when the channel doesn't exist - INVITE returns ERR_USERONCHANNEL appropriately - Nicks are matched case-isensitively Improved - Error message when a client closes its connection - Hardened CI - Test coverage - Message tag writing