Its update time!
In this update we will be rolling out SLASH COMMANDS
Some people may feel a strong sense of melancholy but trust me, there are major UI upgrades and user experience will be much more easier and simpler!
Discord has asked that all bots begin moving towards full slash command support. By november end the bot will completely stop responding to prefixes and you have to use slash commands
Read more about slash commands here https://support.discord.com/hc/en-us/articles/1500000368501-Slash-Commands-FAQ