Awkward

New features

* feat: keep column order after filtering flag by ianna in https://github.com/scikit-hep/awkward/pull/2234
* feat: Awkward Arrays in Numba's CUDA target by ianna in https://github.com/scikit-hep/awkward/pull/1809
* feat: add 'highlevel' and 'behavior' arguments to 'ak.from_rdataframe' function by ianna in https://github.com/scikit-hep/awkward/pull/2258

Bug-fixes and performance

* fix: set dtype in `full_like` by agoose77 in https://github.com/scikit-hep/awkward/pull/2251
* fix: use `simplified` in `ak._do.merge_as_union` by agoose77 in https://github.com/scikit-hep/awkward/pull/2240
* fix: support unknown content length in `to_packed` by agoose77 in https://github.com/scikit-hep/awkward/pull/2263
* fix: run-lengths with typetracer by agoose77 in https://github.com/scikit-hep/awkward/pull/2259
* fix: add trivial `nan_to_num` impl by agoose77 in https://github.com/scikit-hep/awkward/pull/2266
* fix: add `ak.broadcast_fields` by agoose77 in https://github.com/scikit-hep/awkward/pull/2267
* fix: keep column order in all tests by ianna in https://github.com/scikit-hep/awkward/pull/2276

Other

* test: numba cuda tests by ianna in https://github.com/scikit-hep/awkward/pull/2264
* docs: add missing entries to toctree by agoose77 in https://github.com/scikit-hep/awkward/pull/2270
* docs: fix build for latest theme by agoose77 in https://github.com/scikit-hep/awkward/pull/2274
* docs: RDataFrame add multi-threaded example by ianna in https://github.com/scikit-hep/awkward/pull/2269
* docs: add Numba CUDA guide (2260)Co-authored-by: Angus Hollands <goosey15gmail.com> Co-authored-by: Jim Pivarski <jpivarskiusers.noreply.github.com> Co-authored-by: Jim Pivarski <jpivarskigmail.com> by ianna in https://github.com/scikit-hep/awkward/pull/2260
* chore: use scikit-build-core 0.2's build-dir by henryiii in https://github.com/scikit-hep/awkward/pull/2252
* chore: more Ruff by henryiii in https://github.com/scikit-hep/awkward/pull/2184
* chore: update pre-commit hooks by pre-commit-ci in https://github.com/scikit-hep/awkward/pull/2255
* chore: update pre-commit hooks by pre-commit-ci in https://github.com/scikit-hep/awkward/pull/2272
* chore: Ruff updates from dev guidelines (2268)Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]users.noreply.github.com> Co-authored-by: Jim Pivarski <jpivarskiusers.noreply.github.com> by henryiii in https://github.com/scikit-hep/awkward/pull/2268

**Full Changelog**: https://github.com/scikit-hep/awkward/compare/v2.0.8...v2.0.9

New features

* feat: allow awkward type arrays filtering based on rdfentry by ianna in https://github.com/scikit-hep/awkward/pull/2202
* feat!: re-introduce `unknown-length` by agoose77 in https://github.com/scikit-hep/awkward/pull/2229

Bug-fixes and performance

* fix: keep `EmptyArray` in `remove_structure` by agoose77 in https://github.com/scikit-hep/awkward/pull/2219
* fix: add `is_c_contiguous` method to Cupy by ianna in https://github.com/scikit-hep/awkward/pull/2221
* fix: boolean indexing with non-zero starting offsets by agoose77 in https://github.com/scikit-hep/awkward/pull/2216
* fix: add license to _backends by ianna in https://github.com/scikit-hep/awkward/pull/2224
* fix: use of size in `to_RegularArray` by agoose77 in https://github.com/scikit-hep/awkward/pull/2226
* fix: indexing into `RegularArray` with typetracer by agoose77 in https://github.com/scikit-hep/awkward/pull/2227
* fix: support length-zero outer arrays in almost_equal by agoose77 in https://github.com/scikit-hep/awkward/pull/2210
* fix: support options in `ak.merge_union_of_records` by agoose77 in https://github.com/scikit-hep/awkward/pull/2236
* fix: don't merge non-union parameters by agoose77 in https://github.com/scikit-hep/awkward/pull/2241
* fix: boolean slicing with non-packed arrays by agoose77 in https://github.com/scikit-hep/awkward/pull/2246

Other

* refactor: add type hints for `Content._getitem_XXX` by agoose77 in https://github.com/scikit-hep/awkward/pull/2223
* refactor: drop `NumpyLike.known_shape` by agoose77 in https://github.com/scikit-hep/awkward/pull/2228
* refactor: change `Content._getitem_range` to use explicit indices by agoose77 in https://github.com/scikit-hep/awkward/pull/2220
* docs: fix example for `merge_union_of_records` by agoose77 in https://github.com/scikit-hep/awkward/pull/2213
* docs: add 1.10 legacy docs to `switcher.json` by agoose77 in https://github.com/scikit-hep/awkward/pull/2217
* docs: reintroduce Content documentation from v1 reST files. by jpivarski in https://github.com/scikit-hep/awkward/pull/2231
* docs: add `how-to-examine-type.md` by agoose77 in https://github.com/scikit-hep/awkward/pull/2013
* docs: improve ragged indexing docs by agoose77 in https://github.com/scikit-hep/awkward/pull/2247
* chore: include cuda kernel tests in sdist by agoose77 in https://github.com/scikit-hep/awkward/pull/2218
* chore(deps): bump amannn/action-semantic-pull-request from 5.0.2 to 5.1.0 by dependabot in https://github.com/scikit-hep/awkward/pull/2232
* chore: update pre-commit hooks by pre-commit-ci in https://github.com/scikit-hep/awkward/pull/2215

**Full Changelog**: https://github.com/scikit-hep/awkward/compare/v2.0.7...v2.0.8

* feat: add ability to forget length of typetracer created with `typetracer_from_report` by douglasdavis in https://github.com/scikit-hep/awkward/pull/2141
* feat: start hardening nplike signatures by agoose77 in https://github.com/scikit-hep/awkward/pull/2148
* feat: implement all ufuncs on TypeTracer. by jpivarski in https://github.com/scikit-hep/awkward/pull/2149
* feat: use `None` for unknown lengths (1 of 2) by agoose77 in https://github.com/scikit-hep/awkward/pull/2168
* feat: coerce backends to same zero-copy type (2 of 2) by agoose77 in https://github.com/scikit-hep/awkward/pull/2175
* feat: growable buffer move_to method by ianna in https://github.com/scikit-hep/awkward/pull/2178
* feat: add `ak.merge_union_of_records` by agoose77 in https://github.com/scikit-hep/awkward/pull/2185
* feat: add support for histogram module by agoose77 in https://github.com/scikit-hep/awkward/pull/2190
* feat: add `ak.approx_equal` by agoose77 in https://github.com/scikit-hep/awkward/pull/2198

Bug-fixes and performance

* fix: re-order cases to handle NumPy scalar types properly by agoose77 in https://github.com/scikit-hep/awkward/pull/2125
* fix: specify `dtype` for buffers in `from_rdataframe`. by agoose77 in https://github.com/scikit-hep/awkward/pull/2145
* fix: unify typestr with `_repr` by agoose77 in https://github.com/scikit-hep/awkward/pull/2158
* fix: update `type_to_name` for Layout builder `cxx_14` target by ianna in https://github.com/scikit-hep/awkward/pull/2165
* fix: Layout builders clean and length bug fixes by ianna in https://github.com/scikit-hep/awkward/pull/2171
* fix: support `mask_identity=True` for `axis=None` in `ptp`, `std`, etc. by agoose77 in https://github.com/scikit-hep/awkward/pull/2172
* fix: preserve dimensions for `keepdims=True`, `axis=None` reductions by agoose77 in https://github.com/scikit-hep/awkward/pull/2177
* fix: some usages of `len(layout)` under typetracer by agoose77 in https://github.com/scikit-hep/awkward/pull/2181
* fix: rdataframe memory check by ianna in https://github.com/scikit-hep/awkward/pull/2155
* fix: rework parameter merging rules by agoose77 in https://github.com/scikit-hep/awkward/pull/2179
* fix: don't raise `NotImplementedError` when reading empty array from Parquet by dsavoiu in https://github.com/scikit-hep/awkward/pull/2194
* fix: ignore object arrays by agoose77 in https://github.com/scikit-hep/awkward/pull/2206
* fix: ak.values_astype now turns 'unknown' type into the requested type. by jpivarski in https://github.com/scikit-hep/awkward/pull/2196

Other

* refactor: remove `to_arraylib` by agoose77 in https://github.com/scikit-hep/awkward/pull/2128
* refactor: move `Singleton` to its own module by agoose77 in https://github.com/scikit-hep/awkward/pull/2131
* refactor: move kernel logic to _kernels by agoose77 in https://github.com/scikit-hep/awkward/pull/2132
* refactor: use `nplike.asarray` by agoose77 in https://github.com/scikit-hep/awkward/pull/2134
* refactor: remove dead code by agoose77 in https://github.com/scikit-hep/awkward/pull/2139
* refactor: make `nplike.zeros` et al. use Array API type signatures by agoose77 in https://github.com/scikit-hep/awkward/pull/2137
* refactor: move typetracer ufunc handling to backend [1 of 2] by agoose77 in https://github.com/scikit-hep/awkward/pull/2150
* refactor: split `_nplikes.py` into `_nplikes/*.py` [2 of 2] by agoose77 in https://github.com/scikit-hep/awkward/pull/2152
* refactor: drop `UnknownScalar`, harden unknown scalar behavior by agoose77 in https://github.com/scikit-hep/awkward/pull/2154
* docs: fix bold docstring due to indent by agoose77 in https://github.com/scikit-hep/awkward/pull/2122
* docs: disable IPyParallel & load dependencies in reverse order by agoose77 in https://github.com/scikit-hep/awkward/pull/2126
* docs: improve error message by agoose77 in https://github.com/scikit-hep/awkward/pull/2201
* docs: add dsavoiu as a contributor for code by allcontributors in https://github.com/scikit-hep/awkward/pull/2204
* ci: test NumPy < 1.17 by agoose77 in https://github.com/scikit-hep/awkward/pull/2142
* ci: run header-only tests by agoose77 in https://github.com/scikit-hep/awkward/pull/2169
* chore: apply changes from flake8 by agoose77 in https://github.com/scikit-hep/awkward/pull/2130
* chore: isolate nox dependencies in `noxfile` by agoose77 in https://github.com/scikit-hep/awkward/pull/2136
* chore: drop unused nplike functions by agoose77 in https://github.com/scikit-hep/awkward/pull/2138
* chore: add helpful message if cpp install is not prepared by agoose77 in https://github.com/scikit-hep/awkward/pull/2146
* chore: move to Ruff by henryiii in https://github.com/scikit-hep/awkward/pull/2153
* chore(deps): bump pypa/cibuildwheel from 2.11.4 to 2.12.0 by dependabot in https://github.com/scikit-hep/awkward/pull/2133
* chore: update Ruff version by henryiii in https://github.com/scikit-hep/awkward/pull/2174
* chore: ruff rewrite `not in` by henryiii in https://github.com/scikit-hep/awkward/pull/2176
* chore: ruff rewrite dicts by henryiii in https://github.com/scikit-hep/awkward/pull/2183

New Contributors

* dsavoiu made their first contribution in https://github.com/scikit-hep/awkward/pull/2194

**Full Changelog**: https://github.com/scikit-hep/awkward/compare/v2.0.6...v2.0.7

New features

* feat: expose typetracer in public backend API by agoose77 in https://github.com/scikit-hep/awkward/pull/2066
* feat: add byteorder argument to `to_buffers` by agoose77 in https://github.com/scikit-hep/awkward/pull/2095
* feat: add exception for missing field by agoose77 in https://github.com/scikit-hep/awkward/pull/2120

Bug-fixes and performance

* fix: support scalars in tuple (and list) arguments provided to `__array_function__` by agoose77 in https://github.com/scikit-hep/awkward/pull/2045
* fix: support option-in-record for `fill_none` by agoose77 in https://github.com/scikit-hep/awkward/pull/2065
* fix: support unzipping `ak.Record` by agoose77 in https://github.com/scikit-hep/awkward/pull/2077
* fix: render keyword and varargs by agoose77 in https://github.com/scikit-hep/awkward/pull/2074
* fix: don't try to re-wrap `array_function` overload results by agoose77 in https://github.com/scikit-hep/awkward/pull/2079
* fix: support merging of `RegularArray` and `NumpyArray` by agoose77 in https://github.com/scikit-hep/awkward/pull/2063
* fix: correct NumPy zero-size broadcasting by agoose77 in https://github.com/scikit-hep/awkward/pull/2083
* fix: implement explicit translation for NEP-18 by agoose77 in https://github.com/scikit-hep/awkward/pull/2089
* fix: listarray - slicing expects scalars by ianna in https://github.com/scikit-hep/awkward/pull/2069
* fix: off-by-one error in `run_lengths` by agoose77 in https://github.com/scikit-hep/awkward/pull/2093
* fix: broken links due to cpp split by agoose77 in https://github.com/scikit-hep/awkward/pull/2087
* fix: unflatten should accept non-packed `counts` by agoose77 in https://github.com/scikit-hep/awkward/pull/2097
* fix: remove string casting from `ak.to_layout` by agoose77 in https://github.com/scikit-hep/awkward/pull/2098
* fix: support categorical counts in `ak.unflatten` by agoose77 in https://github.com/scikit-hep/awkward/pull/2099
* fix: use pickleable closure for `ak.mixin_class_method` by agoose77 in https://github.com/scikit-hep/awkward/pull/2102
* fix: be more permissive with sort translation by agoose77 in https://github.com/scikit-hep/awkward/pull/2112
* fix: merging 1D `NumpyArray` with option by agoose77 in https://github.com/scikit-hep/awkward/pull/2105
* fix: support `is_indexed` types in `ak.fill_none` by agoose77 in https://github.com/scikit-hep/awkward/pull/2111
* fix: use `object.__new__(ak.Array)` for pickling constructor by agoose77 in https://github.com/scikit-hep/awkward/pull/2113
* fix: remove Long64_t from common header-only by ianna in https://github.com/scikit-hep/awkward/pull/2084
* fix: `TypeTracerArray` binary operators, `ak.Array.__str__` with a typetracer, attempts to call `touch_data` on non-typetracers, ...? by jpivarski in https://github.com/scikit-hep/awkward/pull/2115
* fix: add `ScalarType` and treat bare strings as char arrays by agoose77 in https://github.com/scikit-hep/awkward/pull/2116
* fix: ensure Exception if branch evaluates for Awkward type by agoose77 in https://github.com/scikit-hep/awkward/pull/2019

Other

* refactor: add `final` to contents, types, and forms by agoose77 in https://github.com/scikit-hep/awkward/pull/2033
* refactor: remove `kind` and `order` args to sorting protocols by agoose77 in https://github.com/scikit-hep/awkward/pull/2090
* docs: remove reference to sorting implementation by agoose77 in https://github.com/scikit-hep/awkward/pull/2114
* test: fix on win32 by agoose77 in https://github.com/scikit-hep/awkward/pull/2117
* ci: remove link checker by agoose77 in https://github.com/scikit-hep/awkward/pull/2075
* chore: update pyodide-build by agoose77 in https://github.com/scikit-hep/awkward/pull/2060
* chore: update pre-commit hooks by pre-commit-ci in https://github.com/scikit-hep/awkward/pull/2039
* chore(deps): bump pypa/cibuildwheel from 2.11.3 to 2.11.4 by dependabot in https://github.com/scikit-hep/awkward/pull/2038
* chore(deps): bump mymindstorm/setup-emsdk from 11 to 12 by dependabot in https://github.com/scikit-hep/awkward/pull/2119

**Full Changelog**: https://github.com/scikit-hep/awkward/compare/v2.0.5...v2.0.6

New features

_(none!)_

Bug-fixes and performance

* fix: remove unused keyword arg by agoose77 in https://github.com/scikit-hep/awkward/pull/2046
* fix: support `regular_to_jagged` in `Content._recursively_apply` / `ak.transform` by agoose77 in https://github.com/scikit-hep/awkward/pull/2048
* fix: read behavior from highlevel `ak.ArrayBuilder` by agoose77 in https://github.com/scikit-hep/awkward/pull/2052
* fix: rebuild invalid `check` pointers in `ArrayBuilder` by agoose77 in https://github.com/scikit-hep/awkward/pull/2055

Other

* docs: correct canonical URL by agoose77 in https://github.com/scikit-hep/awkward/pull/2040
* docs: correct docstring for `ak.metadata_from_parquet` by agoose77 in https://github.com/scikit-hep/awkward/pull/2050
* test: rename tests to use identifiers by agoose77 in https://github.com/scikit-hep/awkward/pull/2044
* chore: fix poor rename by agoose77 in https://github.com/scikit-hep/awkward/pull/2049
* chore: increase awkward-cpp version for 2055. by jpivarski in https://github.com/scikit-hep/awkward/pull/2056

**Full Changelog**: https://github.com/scikit-hep/awkward/compare/v2.0.4...v2.0.5

This follows quickly on [2.0.3](https://github.com/scikit-hep/awkward/releases/tag/v2.0.3), which removed a feature and a function argument. Removing the feature is still the right thing to do (see the 2.0.3 release notes), but the function argument needs to go through a deprecation cycle, since libraries like dask-awkward pass arguments through to Awkward. Removing `flatten_records` as an argument introduces an error, even if the surviving case of `flatten_records=False` is desired.

This will also be a good exercise of the [deprecation schedule](https://github.com/scikit-hep/awkward/wiki#api-breaking-changes-after-20) in 2.x.

New features

_(none!)_

Bug-fixes and performance

* fix: soft-deprecate `flatten_records` instead of hard-deprecation by agoose77 in https://github.com/scikit-hep/awkward/pull/2036

Other

_(none!)_

**Full Changelog**: https://github.com/scikit-hep/awkward/compare/v2.0.3...v2.0.4