[DataHaskell] first release of beam-duckdb

I’m just popping back in here to mention that the latest release, 0.3.1.0, adds support for the COPY statement, among other things.

This means that you can write a Haskell program to:

• import data from a Parquet file;
• process data using beam as always;
• write data data back to a Parquet file.

The beam documentation has been updated to show how to use this.