Version 4.0 - Flawless Fluorite

What's Changed

v4.0 Introduces a lot of new algorithm, a new type (record) and fixes a bunch of performance and clarity issues.
A bunch of old functions has been deprecated, hence the major version bump.

New Features

• Named Fields & Records:
  • Introducing named fields and record support (#110, #112).
  • Introducing record protocol and record support in algorithms (#132, #144).
  • Support for types as identifiers and get via label (#168, #186).
• New Algorithms:
  • Implement generate and fill (#107).
  • Introducing windows & chunks (#123).
  • Introducing filter & filter_not (#124).
  • Introducing reindex algorithm (#130).
  • Add unique / all_unique algorithms (#139).
  • Introducing reduce & scans (#137).
  • Introducing rotate algorithm (#154).
  • Add projection maps support (#182).
  • Implement map_traits (#104).
• Core Logic & Performance:
  • Introducing builder for tuple construction (#111).
  • Introducing empty_product_type concept (#143).
  • Make std::array and static std::span behave as product types (#140).
  • Introduce as_streamable extension point (#145).
  • Implicit conversion operator on tuples (#152).
  • Deprecate .cast() and callable behavior (#135).
  • Introduce static container adaptation (#158).
  • Move from opt-in to detection for product type semantic (#160).
  • Empty Base Optimization (EBO) support (#163, #167).

FIXES

• Compiler & Compatibility:
  • Reimplement cartesian_product for latest MSVC compatibility (#97).
  • Fix shadow warnings (#108).
  • Fix qualification consideration in concepts (#136).
  • Missing typename for C++20 (#128).
  • Fix for TTS v3 (#129).
  • Remove spurious semicolons triggering errors on older GCC versions (#188).
• Logic & Bug Fixes:
  • Make std::is_empty work as expected on tuples and records (#138).
  • Fix IO of field capture of empty type (#165).
  • Improve diagnostic of invalid get (#150).
  • Use static_assert instead of requires for logic errors (#184).
  • Clarify error messages for invalid records (#166).
• Refinement:
  • Make operator< better (#98).
  • Add KUMI_ABI markers to enhance codegen and CUDA __host__ __device__ support (#119, #121).
  • Make tuple algorithms accept forwarding references (#127).
  • Move towards invoke instead of raw callable application (#161).
  • Simplification of field_capture unwrapping (#141).
  • Move concepts to their own namespace (#170).
  • Test missing record algorithms + doc (#178).

DOC and CI infra

• Documentation:

  • Fixup FetchContent docs (#91).
  • Rearrange tree links in documentation (#117).
  • Refurbish documentation and fix rendering/links (#185, #197).
  • Fix README code block and badge appearance (#187, #194).

• CI & Infrastructure:

  • Move KUMI standalone file to its own branch (#114, #120).
  • Add explicit standalone tests and proper standalone file (#116, #176,#174).
  • Move to CI v10 and update to latest CI infra (#105, #196).
  • Migration to precommit (#157).

New Contributors

• @Nxirda made their first contribution in #104

Full Changelog: v3.1...v4.0