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          The TeplEncoding class has been removed, as part of the
          beginning of a complete overhaul of the file loading and saving
          functionality.
        
Start to rework the TeplFile, TeplFileLoader and TeplFileSaver classes. As such, there are some API breaks in those classes. And as a result, they currently contain less features as before, unfortunately.
The TeplMetadataManager API has been re-worked.
          The TeplFileMetadata class has been replaced by
          TeplMetadata, the latter no longer
          depends on TeplFile.
        
          The tepl_file_get_file_metadata() function has been
          removed.
        
The tepl_tab_load_file() function no longer loads the file metadata (but it was anyway an implementation detail).
          The TeplAbstractFactoryVala class has been removed,
          because it's possible to manually manage GObject references in Vala.