Redis, EC2, Pex, and more!

• The develop branch lives no longer.
• Renovate and PyUp are constantly scanning for dependency updates and open PRs.
• Running/Updating bowser on EC2 is easy now with a few short scripts.
• Bowser is now bundled into an executable by using pex (try: make package).
• Fixed bowser's main from halting when losing connection with discord. Now, bowser will try to reconnect every few seconds.
• All game server configuration is now stored in redis.
• Partial support for using bowser in DMs has begun. Unfortunately, the !set command does not work yet with DMs.
• Switched back to using GNU make for development.
• Python dependencies are now managed by pipenv's Pipfile.
• Lots of little bugs were fixed along the way too.