Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

upgrade-46.sql
-- Unify Builds and BuildSteps status codes.
update BuildSteps set status = 3 where status = 4;

-- Get rid of obsolete status code 5.
update Builds set isCachedBuild = 1, buildStatus = 2 where buildStatus = 5;