Version 1.0.0-rc0

Full Changelog: v1.0.0-beta.1...v1.0.0-rc0

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IMPORTANT

Bugs have been identified and are currently being addressed.
However, it is likely that additional issues remain undiscovered at this stage.

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Changelog Summary:

• Added leaderboard 🏆
• Updated README.md & added CONTRIBUTING.md
• Larger suite of commands (such as !ban) for server.py
• Added log files
• Updated GUI for client.py & lesson-editor.py