v0.20.0

Breaking changes

• Updated rust-polars to 0.43.1 (#1230).
• In pl$scan_ipc() and pl$read_ipc(), the argument memory_map is removed
  (#1230).
• In $serialize(), in the field schema, the field inner is renamed fields,
  and the fields output_schema and filter are removed (#1230).

New features

• New method $cast() for DataFrame and LazyFrame (#1219).
• New argument strict in $drop() to determine whether unknown column names
  should trigger an error (#1220).
• New method $to_dummies() for DataFrame (#1225).
• New argument include_file_paths in pl$scan_csv() and pl$read_csv() (#1235).
• New method $join_where() for DataFrame and LazyFrame to perform
  inequality joins (#1237).

Bug fixes

• Converting data of datatype Null to R doesn't error anymore. It now creates
  a column filled with NA (#1217).

New Contributors

• @collioud made their first contribution in #1238

Full Changelog: v0.19.0...v0.20.0