New will create a new Bot.

Bot structure.

Message contains the slack.MessageEvent and processed information.

A Handler responds to a message.

A JoinHandler responds to a user joining the Slack team.

JoinResponder provides methods for responding to a user joing the Slack team.

Responder provides methods for responding to messages.

HandlerFunc adapts a function to be a Handler.

JoinHandlerFunc adapts a function to be a JoinHandler.

Logger function.