vTodo data vTodo import/export interface. Functions to import and export vTodo files from GPE PIM applications using libmimedir. Creates a mimedir vTodo object from a given list of tags. @tags: List of tag-value pairs. @Returns: New mimedir vTodo object. Creates a list of tags and values from a mimedir vTodo object. @vtodo: vTodo object to convert to a tag-value list. @Returns: New allocated list of tags and values.