0.04 2026-01-27
- Ensure all Set operations return the element count in scalar context.
- Added keys_partition(), which partitions keys into three disjoint sets: 
  A \ B, A ∩ B, and B \ A.

0.03 2026-01-26
 - any() and all() require List::Util ≥ 1.33.

0.02 2026-01-26
  - Ensure tests run against the pure-Perl version, not an installed XS version.

0.01 2026-01-25
  - Initial CPAN release.