Tag version v6.22/00.
Tag for patch release v6.20/06.
Start v6-23-01 development cycle towards v6.24.
"Update ROOT version files to v6.21/02."
Tag release candidate v6.21/02 (aka v6-20-00-rc1).
Patch release v6.20/04.
Tag patch release v6.20/02.
Production release v6.20/00.
First release candidate for the upcoming v6.20 release.
Development release alias for the first release candidate of v6.20.