CHANGELOG.md

µWheel Changelog

This file contains all notable changes to µWheel.

0.4.0 (2026-02-25)

Added

• Bloom filter aggregator powered by fastbloom #166 by @Max-Meldrum
• Roaring Bitmap Aggregators #164 by @Max-Meldrum

Breaking Changes

• PartialAggregateBounds no longer requires Copy, only Clone. Aggregators with heap-allocated partial aggregates (e.g., Roaring Bitmaps, Bloom Filters) are now supported. Code relying on PartialAggregate: Copy (e.g., .copied()) must switch to .cloned() #164 by @Max-Meldrum

0.3.0 (2025-04-14)

Bug Fixes

• Fix issue with CompressedDeque returning incorrect results when used across time dimensions #162 by @Max-Meldrum

Added

• Hammerslide slicing window aggregator support #155 by @LYZJU2019
• Prefix SIMD Build capability #152 by @LYZJU2019
• Query integration tests with Datafusion #149 by @Max-Meldrum

0.2.1 (2024-08-22)

Fixed

• Fix split wheel range bug with certain dates #147 by @Max-Meldrum
• Remove assert in combine_range favouring None instead #143 by @Max-Meldrum
• Fix return type for combine_range_and_lower #140 by @Max-Meldrum

Added

• Add initial test cases using proptest #147 by @Max-Meldrum
• Add group_by benches #144 by @Max-Meldrum

0.2.0 (2024-07-13)

Added

• Add full group_by query #139 by @Max-Meldrum
• Add full serde compatibility #137 by @Max-Meldrum
• Add Session Windowing support #136 by @Max-Meldrum
• Add MinMax Aggregator b47b825 by @Max-Meldrum
• Add Bitpacking encoding example #131 by @Max-Meldrum

Changed

• Increase number of test cases #60 by @Max-Meldrum
• Improved query performance for compressed aggregates #130 by @Max-Meldrum

Breaking Changes

• Rework the Window API to be more extensible #136 by @Max-Meldrum