Composr 10.0.48 beta released

This is the first v10 release with support for upgrading to v11. Version 10.0.47 and below might be able to upgrade to v11, but you may encounter missing addons if you don't first upgrade to 10.0.48 beta.

This release will be paired with a version 11 beta1 release hopefully in a few days. The main purpose of these two releases is to allow the community to begin testing upgrading from version 10 to version 11.

To clarify upgrade compatibility:

• Upgrading 10.0.48 beta or later -> 11 beta1 or later is supported for basic websites (you might encounter some errors still as this is all still beta)
• Upgrading 10.0.47 or before -> 11 beta1 or later might work, but you could have missing bundled addons
• Upgrading any v10 version -> any 11 alpha version is not supported; the upgrader will fail with critical errors