clouddrift-0.13.0

What's Changed

• Rename dataformat -> raggedarray by @milancurcic in #171
• Regular to ragged fill_value by @milancurcic in #174
• Add examples to write the ragged array to NetCDF and Parquet files by @milancurcic in #175
• prune by @philippemiron in #172
• make sure all elements are Iterable by @philippemiron in #177
• Bump version to 0.13.0 by @milancurcic in #178

Full Changelog: v0.12.0...v0.13.0