Changes to Default Behavior in Release 5.5
Upgrade Or Downgrade Path
Use the following paths to upgrade to the release 5.5.x, and
use the path in reverse to rollback to the version you started from:
4.7.1 -> 5.1.x -> 5.4.x -> 5.5.x
4.7.1 -> 5.0.x -> 5.2.x -> 5.5.x
5.0.x -> 5.2.x -> 5.5.x
5.1.x -> 5.4.x -> 5.5.x
5.2.x -> 5.5.x
5.4.x -> 5.5.x
