Create data formats based on uniVocity parsers

There's a library called uniVocity-parsers that provides implementations for reading and writing CSV files, fixed-width files and TSV files.

It's quite fast according to this benchmark. Obviously it may be biased since they're doing the benchmark, but they're also open enough to provide the source code of the benchmark so anyone can reproduce it.

So it would be nice to have data formats that uses those parsers.