Version 2.6.4

New features

• feat: TypeTracerReport.data_touched_in should ignore unrecognized node_ids by @jpivarski in #3074
• feat: better error message for missing dispatch by @jpivarski in #3078
• feat: add boolean cases for CPU kernels by @ManasviGoyal in #3059
• feat: add ak.flatten and ak.concatenate kernels by @ManasviGoyal in #3086

Bug-fixes and performance

• fix: restrict ak.softmax to axis=-1, the only axis for which the calculation is correct right now by @jpivarski in #3072
• fix: Numpy 2.0 out of bounds error for BitMaskedArray Py kernels by @ManasviGoyal in #3073
• fix: _is_getitem_at_placeholder logic was backward for UnionArray by @jpivarski in #3083
• fix: refuse dak.Array in hidden-but-public-functions by @jpivarski in #3079
• fix: PyPy segfault may be related to using out-of-scope array by @jpivarski in #3093
• fix: distributed rdataframe is not yet support by @ianna in #3087
• fix: support conversion to arrow and back with non-option Unknown type by @tcawlfield in #3085
• fix: intermittent segfault in PyPy by @ianna in #3089
• fix: is_valid checks in header-only library by @zonca in #3091
• fix: UnmaskedArray was missing its _nextcarry_outindex by @jpivarski in #3097

Other

• test: cuda integration tests by @ManasviGoyal in #3065
• ci: macos-latest is changing to macos-14 ARM runners by @henryiii in #3092
• docs: new Try-It page based on plain Pyodide by @jpivarski in #3058
• docs: Add installation of nightly wheels instructions by @matthewfeickert in #3080
• docs: revamp documentation by @jpivarski in #3076
• chore: update pre-commit hooks by @pre-commit-ci in #3075
• chore: update pre-commit hooks by @pre-commit-ci in #3082
• chore: update pre-commit hooks by @pre-commit-ci in #3090
• chore: update pre-commit hooks by @pre-commit-ci in #3096
• chore(deps): bump amannn/action-semantic-pull-request from 5.4.0 to 5.5.2 in the actions group by @dependabot in #3095

Full Changelog: v2.6.3...v2.6.4