Completely removing the app migration system and all related mechanisms
(Also adds v3 series info to README.md
and sharpens some other wordings there)
This GitLab instance and associated infrastructure will be undergoing maintenance work on Tuesday April 7th from 14:00 to 20:30 BST. Several periods of downtime are anticipated. Apologies for any inconvenience caused.
(Also adds v3 series info to README.md
and sharpens some other wordings there)