Archon-bot

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- Fix registering another user

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- Fix command registration
- Check registered decks for banned cards

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- Improve command registration

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- Handle new VDB domain name (now vdb.im)

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- Alpha V1
- Using PostgreSQL as backend database for easier external tooling
- Clear separation between internal logic and bot interface for future interfaces
- Using slash commands for better UX
- Tests pending
- Archon files export unavailable
- Probably quite a few bugs remaining, to be field-tested

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- Fix KRCG version to old seating for now.