Botpress module channel for Mattermost.
Uses Mattermost client as library to connect.
- https://github.com/loafoe/hubot-matteruser as implementation example (for Hubot),
- https://github.com/RocketChat/botpress-channel-rocketchat as channel implementation example as Rocket.chat and Mattermost are quite similar (both similar to Slack)