v0.7.1 - 2026-03-25

What's Changed

• chore: upgrade dependencies by @coriolinus in #52
• fix: error[E0277]: the trait bound St: BuildHasher is not satisfied by @krzemyczek in #56

New Contributors

• @krzemyczek made their first contribution in #56

Full Changelog: v0.7.0...v0.7.1

v0.7.0 - custom hashers

What's Changed

• Add support for custom hashers by @mjclarke94 in #51

New Contributors

• @mjclarke94 made their first contribution in #51

Full Changelog: v0.6.0...v0.7.0

v0.6.0

What's Changed

• update edition, add counter keyword by @chris-ha458 in #34
• refactor tests and impls into distinct modules by @chris-ha458 in #36
• small doc formatting by @chris-ha458 in #38
• deprecate init method by @coriolinus in #41
• do not use deprecated init method by @coriolinus in #42
• With capacity by @chris-ha458 in #40
• Clippy fixes by @chris-ha458 in #43
• Implement Serialize and Deserialize by @matthewmcintire-savantx in #46

New Contributors

• @chris-ha458 made their first contribution in #34
• @matthewmcintire-savantx made their first contribution in #46

Full Changelog: v0.5.7...v0.5.8

v0.5.7: Counters are Multisets

What's Changed

• Implement is_subset and is_superset tests by @mjpieters in #27
• Implement bitwise and and or assignments by @mjpieters in #28
• Fix spelling error in doc header by @mjpieters in #29
• Multiset bag documentation by @coriolinus in #31

New Contributors

• @mjpieters made their first contribution in #27

Full Changelog: v0.5.6...v0.5.7

v0.5.6: `k_most_common_items` and more relaxed trait bounds

What's Changed

• Relax more trait bounds by @clint-white in #22
• Improve concision by @clint-white in #23
• Fix minor issues in documentation by @clint-white in #24
• Add method to return the k most common items and speed up most_common_*() methods by @clint-white in #25

Full Changelog: v0.5.5...v0.5.6

v0.5.5: Relax trait bounds, add `.total()` method

What's Changed

• Add method Counter::total() by @clint-white in #20
• Relax trait bounds by @clint-white in #21

New Contributors

• @clint-white made their first contribution in #20

Full Changelog: v0.5.4...v0.5.5

v0.5.4: Relax trait bounds for `Default`

What's Changed

• Relax trait bounds for Default implementation by @jonasbb in #19

New Contributors

• @jonasbb made their first contribution in #19

Full Changelog: v0.5.3...v0.5.4

more iterators and relax trait bounds

What's Changed

• Added implementations for IntoIter and IterMut by @TinBryn in #16
• <N: Clone> bound is not required on {Add,Sub}{,Assign} by @samueltardieu in #17
• Cleanup redundant references by @samueltardieu in #18

New Contributors

• @TinBryn made their first contribution in #16
• @samueltardieu made their first contribution in #17

Full Changelog: v0.5.2...v0.5.3

impl Extend, IntoIterator for Counter

Implementing these traits gives users more ways to usefully combine their counts.

Remove unnecessary cloning

This release removes self-cloning from the Add, Sub, and BitOr impls.
This also fixes a number of other clippy, minor clippy lints.