Quilibrium

It's been a hectic week at /quilibrium:

- Versions 2.0.6 and 2.0.6-p1 have been released to address reported vulnerabilities, with a post-mortem to follow.
- Quorum is introducing spaces; users can create them, but invitations are currently paused until the issues with v2.0.6 are fully monitored.
- The pre-2.0 mints are nearing completion, moving us closer to version 2.1.
- Coming up next: the reopening of invitations for Quorum, milestone 3 for the testnet, and a preview of the developer SDK.