The simpler media website CMS
In your upgrade instructions you write:
The only sequence we can guarantee to work is upgrading from the previous feature release and of course within from support release to support release of the same feature release. Even then you should check the release posts in case bugfixes do cause some other changes.
Do I need to upgrade through steps 1.5.2, 1.5.3 and 1.5.4 ?
If so where do I find those upgrades, please?