Minor Breaking Changes in v15

IContentType.Description removed

The internal object IContentType used to have a Description. It has been obsolete for a long time and just used internally. This was removed.

ToSic.Eav.Repositories.RepositoryInfoOfFolder was removed

This was an old API, please use ToSic.Eav.Repositories.FolderBasedRepository instead.

AppCacheLoader was changed

This is just very internal and only relevant to caching providers.

.data is now App_Data

An internal folder which was called .data is now App_Data