We've upgraded to Lemmy 0.18.3 and other improvements

You may have noticed that Lemdit was down for about 2 hours earlier (if you did notice, then I hope the status page kept you informed).

Below is a summary of what was done:

• Host software updates (some things required a restart).
• Host hardware upgrades - larger SSD installed and Lemdit migrated to it. This was not done out of necessity, but for future proofing.
• VM image back-ups - this is a separate activity to the nightly DB backups
• Lemmy upgraded to 0.18.3 - this version comes with significant DB improvements and required a DB migration.

Overall it took longer than I hoped it would, but I think it was all worthwhile.

Please let me know if you notice any weird behavior from Lemdit.