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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased]
## [2.1.0] - 2026-01-07
- Bump minimum Ruby version to 3.2
- Add comprehensive tests for QR code boundaries and encoding
- Performance optimisations: 80-90% faster QR code generation across all sizes
- Optimised demerit calculation functions (`demerit_points_1_same_color`, `demerit_points_2_full_blocks`, `demerit_points_3_dangerous_patterns`)
- Eliminated nested Range objects and redundant array lookups in hot paths
- Pre-computed frequently accessed values to reduce calculation overhead
- Large QR codes (v20) now generate in ~85ms vs ~154ms previously
- Memory optimisation: 70-76% reduction when using `RQRCODE_CORE_ARCH_BITS=32`
- Single large QR (v24): 8.53 MB → 2.92 MB
- Batch generation (100x v1): 37.91 MB → 9.10 MB
- Also provides 2-4% speed improvement due to better cache locality
- Add comprehensive benchmarking infrastructure with memory and performance profiling tools
## [2.0.1] - 2025-11-25
- Update required_ruby_version to support >= rather than ~> ready for Ruby 4
## [2.0.0] - 2025-04-24
- Various README updates
- Fix for issue #43
- Fix for issue #42
- Drop Ruby < 3 to keep up with dependency updates
- Add option to use ENV `RQRCODE_CORE_ARCH_BITS` to override the bits value (32 or 64) used during the encoding process.
This has been shown to greatly reduce the memory usage but I can't prove it doesn't break anything for all people.
Use at your own risk.
- Fixed the 'Do Your Own Rendering' example code to reflect the current interface.
## [1.2.0] - 2021-08-26
- Added Multi Mode Support which allows for multi-segment encoding. Thanks to [@ssayer](https://github.com/ssayer)
## [1.1.0] - 2021-07-01
- Add a basic benchmark file
- Add standardRB badge
- Add `.freeze` on `CONST` lookup objects
- Remove unused `@mode` instance variable
- A batch of small refactors and optimizations
## [1.0.0] - 2021-04-23
### Changed
- README updated
- Small documentation clarification [@smnscp](https://github.com/smnscp).
- Rakefile cleaned up. You can now just run `rake` which will run specs and fix linting using `standardrb`
### Breaking Changes
- Very niche but a breaking change never the less. The `to_s` method _no longer_ accepts the `:true` and `:false` arguments, but prefers `:dark` and `:light`.
## [0.2.0] - 2020-12-26
### Changed
- fix `required_ruby_version` for Ruby 3 support
[unreleased]: https://github.com/whomwah/rqrcode_core/compare/v2.1.0...HEAD
[2.1.0]: https://github.com/whomwah/rqrcode_core/compare/v2.0.1...v2.1.0
[2.0.1]: https://github.com/whomwah/rqrcode_core/compare/v2.0.0...v2.0.1
[2.0.0]: https://github.com/whomwah/rqrcode_core/compare/v1.2.0...v2.0.0
[1.2.0]: https://github.com/whomwah/rqrcode_core/compare/v1.1.0...v1.2.0
[1.1.0]: https://github.com/whomwah/rqrcode_core/compare/v1.0.0...v1.1.0
[1.0.0]: https://github.com/whomwah/rqrcode_core/compare/v0.2.0...v1.0.0
[0.2.0]: https://github.com/whomwah/rqrcode_core/compare/v0.1.2...v0.2.0
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