redewiedergabe/corpus: First public release of the "Redewiedergabe" corpus

This beta release contains the first subset of the "Redewiedergabe" corpus. It includes 619 text samples and 360,974 tokens. 9,451 STWR instances have been annotated, as well as additional information like frames, introductory expressions and speakers. Available formats are TEI compatible XML and a column-based text format.