v0.21.0

Breaking changes

• Updated Rust Polars to 0.44.2 (#1271).
  • Minimum supported Rust version (MSRV) is now 1.82.0.
  • $reshape()'s nested_type argument is removed.
  • $approx_n_unique() no longer works on Categorical type.
• <Series>$compare() is removed. (#1272)

Deprecations

• Passing a single data.frame to pl$DataFrame() or pl$LazyFrame() to convert a
  data.frame to a polars DataFrame or LazyFrame is deprecated and a warning will
  be shown. Use as_polars_df() or as_polars_lf() instead (#1275).

Bug fixes

• Maintain level order when converting Enums to factors (#1252, @andyquinterom).

Full Changelog: v0.19.0...v0.21.0