Upgrade from v3.2 to v4 migration docs

[cryo75]

I've been using AdminLte 3.2 / Bootstrap 4 for some years now. I would like to finally upgrade to AdminLte 4 / Bootstrap 5. Is there a migration guide?

[umer936]

AdminLTE 4 / Bootstrap 5 is not quite stable yet. See #3692 for info

[dfsmania]

AdminLTE 4 / Bootstrap 5 is not quite stable yet. See #3692 for info

Besides that, and honestly, I don't see any easy migration guide. AdminLTE v4 will contain a lot of breaking changes and it's more likely you will face unlimited problems when trying to migrate a project currently using AdminLTE v3. My advice is to wait for a stable version of AdminLTE v4 and to only use it on new projects, but I hope I'm wrong about this.

[DPComp]

AdminLTE 4 / Bootstrap 5 is not quite stable yet. See #3692 for info

Besides that, and honestly, I don't see any easy migration guide. AdminLTE v4 will contain a lot of breaking changes and it's more likely you will face unlimited problems when trying to migrate a project currently using AdminLTE v3. My advice is to wait for a stable version of AdminLTE v4 and to only use it on new projects, but I hope I'm wrong about this.

but there any many, and I'm included in this, that uses AdminLTE 3 and needs to update to bootstrap 5