MP2-422: Let the ImporterWorkerNewGen ignore a request for suspension if it was already suspended. Suspending again is not necessary anymore due to the new implementation of ImporterWorkerDataflowBlockBase.
MP2-422: On a refresh import, let the DirectoryUnfoldBlock delete all subdirectory MediaItems in the MediaLibrary that do not exist anymore in the file system.
MP2-422: Handle directories that are single resources (such as DVD directories) correctly in the DirectoryUnfoldBlock. This is currently a workaround and should be replaced by a call to a yet to be implemented IsSingleResource method in the MetadataExtractors.
MP2-422: Changed processing order of DirectoryUnfoldBlock to avoid some PendingImportResources to be processed multiple times after reactivation of an ImportJob that was suspended to disk before.
MP2-422: Added FileUnfoldBlock
MP2-422: Added MetadataExtractorBlock
MP2-422: Added MediaItemSaveBlock