v0.9.0

What's Changed

• fix(docs): repair mobile sidebar by bumping sphinx-book-theme to 1.2.0 by @FBumann in #779
• feat(io): stamp linopy version into netCDF export by @FBumann in #780
• fix(io): write LP bounds for tightened binary variables by @FBumann in #777
• feat(model): allow {0,1} bounds for binaries in add_variables by @FBumann in #778
• bench: internal performance benchmark suite + CodSpeed CI by @FBumann in #781
• build(deps-dev): bump matplotlib from 3.9.1 to 3.11.0 by @dependabot[bot] in #788
• build(deps): bump the github-actions group with 2 updates by @dependabot[bot] in #784
• build(deps-dev): bump sphinx from 7.3.7 to 9.0.4 by @dependabot[bot] in #789
• build(deps-dev): bump pytest from 9.1.0 to 9.1.1 in the benchmark-tooling group by @dependabot[bot] in #785
• build(deps-dev): bump sphinx-rtd-theme from 2.0.0 to 3.1.0 by @dependabot[bot] in #786
• fix(constraints): freeze empty constraint groups without reshape error by @Ketchp in #783
• feat(persistent): in-place solver updates (Solver framework + HiGHS/Gurobi/Xpress/Mosek) by @FabianHofmann in #718
• build(deps-dev): bump numpydoc from 1.7.0 to 1.10.0 by @dependabot[bot] in #787
• fix(variables): Variable.where works with solution attached by @FabianHofmann in #790
• chore: fix typing with new highspy version by @FBumann in #795
• docs: import AGENTS.md into CLAUDE.md by @FBumann in #794
• feat(piecewise): active_fill for partial active gates (alt. to #797, #796) by @FBumann in #798
• build(deps): bump the github-actions group with 2 updates by @dependabot[bot] in #807
• bench: arithmetic operation micro-benchmarks by @FBumann in #805
• build(deps-dev): bump pytest-memray from 1.8.0 to 1.9.0 in the benchmark-tooling group by @dependabot[bot] in #808
• build(deps-dev): bump ipykernel from 6.29.5 to 7.3.0 by @dependabot[bot] in #812
• build(deps-dev): bump ipython from 8.26.0 to 9.15.0 by @dependabot[bot] in #810
• build(deps-dev): bump highspy from 1.13.1 to 1.15.0 by @dependabot[bot] in #809
• fix: GLPK objective parsing by @danielelerede-oet in #818
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #819
• fix: widen Variable.sum dim parameter type to DimsLike by @manud99 in #820
• perf(groupby): unify scatter kernel over numpy and dask via apply_ufunc by @FBumann in #802
• perf: drop explicit zeros from the constraint matrix (#814) by @FBumann in #815
• build(deps-dev): update docutils requirement from <0.21 to <0.24 by @dependabot[bot] in #811
• perf: default integer arrays to int32 for ~25% memory reduction by @FBumann in #566
• perf: prune explicit zeros at matrix assembly (cut build peak memory) by @FBumann in #816
• test: make assert_linequal ignore dimension order by @FBumann in #801
• docs: list SCIP in supported solvers (README, index) by @FabianHofmann in #825
• fix: groupby-sum fast path reduces multi-dim DataArray grouper over all its dims by @FabianHofmann in #824
• refactor(int32): per-model label dtype instead of sticky process-global by @FBumann in #828
• fix(gurobi): dispose the solver model before the env on close by @FBumann in #826
• fix(groupby): align groupers by label, raise on mismatch (#827) by @FBumann in #830
• docs: add working-with-solvers notebook for the stateful Solver API by @FBumann in #685
• docs: list SCIP in supported solvers by @FabianHofmann in #835
• added two example notebooks: energy-resource-build and sudoku by @tpu-brunkhorst in #356
• fix(groupby): preserve grouped-dim position in groupby-sum by @FabianHofmann in #860
• fix: don't leak aux coords of summed dims onto the term dimension by @FBumann in #829
• fix(packaging): ship linopy.remote and linopy.persistent in the wheel by @FBumann in #865
• docs: harmonize PR/issue refs in release notes by @FabianHofmann in #866

New Contributors

• @Ketchp made their first contribution in #783
• @manud99 made their first contribution in #820
• @tpu-brunkhorst made their first contribution in #356

Full Changelog: v0.8.0...v0.9.0

v0.8.0

What's Changed

• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #505
• perf: matrix accessor rewrite by @coroa in #630
• docs(piecewise): rewrite reference page + tutorials for correctness and pedagogy by @FBumann in #677
• docs: fix broken toctree, refresh API reference, and clean up references by @FBumann in #680
• refactor: stateful Solver instances and two-step solve API by @FabianHofmann in #682
• docs: silence HiGHS console output in tutorial notebooks by @FBumann in #678
• docs: reorganize toctree into basic→advanced sections, rewrite user-guide landing by @FBumann in #681
• docs: credit Felix Bumann in copyright, author, and pyproject maintainers by @FBumann in #687
• feat(xpress): add direct API support via loadproblem by @FabianHofmann in #684
• deps: add remote extra for paramiko and migrate install docs to uv by @FBumann in #686
• fix(sos): refuse masked SOS variables with a clear error; fix reformulate_sos=True no-op on native SOS solvers by @FBumann in #689
• fix(test): only skip GPU-only solvers without --run-gpu (#693) by @FBumann in #694
• refactor(sos): add Model.apply/undo_sos_reformulation methods by @FBumann in #690
• fix(remote): use TemporaryDirectory to avoid Windows tempfile lock by @FabianHofmann in #698
• Xpress 9.9+ backward compatibility and other updates by @brunoficoxpress in #701
• ci: swap aflc/pre-commit-jupyter for nbstripout by @FBumann in #700
• fix(sos): SOS constraints on masked variables (#688) by @FBumann in #692
• fix(xpress): use ExitStack to manage xpress.problem() lifecycle by @brunoficoxpress in #702
• fix(license-leaks): release license slot from Mosek, COPT, and MindOpt probe and solver paths by @FBumann in #695
• drop python 3.10 support by @lkstrp in #721
• refactor(types): unify SUPPORTED_CONSTANT_TYPES with ConstantLike alias by @FBumann in #728
• Improve Mosek interface to select optimal solution by @mgrabovsky in #667
• Feature/example of drop=True by @RobbieKiwi in #557
• refactor: unify coords-as-truth handling in add_variables/add_constraints by @FBumann in #732
• ci: fix model runs by @lkstrp in #522
• perf(matrices): cache MatrixAccessor properties with cached_property by @MaykThewessen in #716
• feat: add BaseExpression.has_terms property by @FBumann in #743
• refactor: move alignment code to linopy/alignment.py; restructure tests by @FBumann in #742
• 311 syntax by @RobbieKiwi in #739
• chore: Return Self from SolverStatus.from_termination_condition by @FBumann in #746
• docs: AI-assisted contribution guide by @FBumann in #754
• fix(alignment): tolerate xarray without CoordinateValidationError by @FBumann in #762
• fix: regression with tuple coords entries as xarray's (dim_name, values) by @FBumann in #766
• test: use public API in assertions instead of internal .data by @FBumann in #760
• fix(groupby): group by non-dimension coordinate names; fast multi-key grouping by names (#750, #753) by @FBumann in #751
• fix: Variable.fix() value alignment on named dimensions by @FBumann in #774
• feat: Add indicator constraints by @mcoughlin in #594
• feat: add m.dualize() by @bobbyxng in #626
• docs: cut release notes for v0.8.0 by @FBumann in #759

New Contributors

• @mgrabovsky made their first contribution in #667

Full Changelog: v0.7.0...v0.8.0

v0.7.0

What's Changed

• feat: add sos reformulations into linopy to simplify adoption of new sos features by @FBumann in #549
• feat: add piecewise linear constraint API (SOS2, incremental, disjunctive) by @FBumann in #576
• Add reformulate_sos='auto' support to solve() by @FabianHofmann in #595
• fix: make google-cloud-storage and requests optional dependencies by @lkstrp in #589
• build(deps): bump the github-actions group with 3 updates by @dependabot[bot] in #598
• Expose the knitro context by @finozzifa in #600
• enable quadratic for win with scip by @davide-f in #588
• Piecewise linear constraints: follow-up improvements by @FabianHofmann in #602
• Fix flaky SCIP time limit test (fixes #577) by @FabianHofmann in #606
• refac: introduce consistent convention for linopy operations with subsets and supersets by @FabianHofmann in #572
• Fix Xpress IIS mapping for masked constraints by @FabianHofmann in #605
• handle missing dual values when barrier solution has no crossover by @danielelerede-oet in #601
• feat: Add semi-continous variables as an option by @mcoughlin in #593
• ci: Add CI workflow to test documentation notebooks by @FBumann in #615
• Add OetcSettings.from_env() and forward solver options through Model.solve() by @FabianHofmann in #612
• feat: add m.copy() method to create deep copy of model by @bobbyxng in #623
• feat: Add fix(), unfix(), and fixed to Variable and Variables by @FBumann in #625
• fix: Include semi-continuous in Variable.type property by @FBumann in #635
• Re-introduce knitro context closure and export solver quantities by @finozzifa in #633
• feat: Add relax() and unrelax() to Variable and Variables by @FBumann in #634
• refac: replace print calls with str-returning format_* methods by @FBumann in #621
• perf: use numpy array lookup for solution unpacking by @MaykThewessen in #619
• chore: benchmarks by @FBumann in #567
• fix: add_variables ignoring coords for DataArray bounds by @FBumann in #614
• fix: blacklist highs 1.14.0 by @coroa in #654
• fix: use xarray.Dataset copy instead of constructor by @maurerle in #647
• feat: add weakref to Model.slots by @FBumann in #656
• fix: as_dataarray treating multi-index levels as extra dims by @FabianHofmann in #659
• fix: compute a single IIS in Xpress infeasibility path by @FabianHofmann in #658
• Update release notes for v0.6.7 by @FabianHofmann in #661
• fix: raise clear error when solving model without objective by @FBumann in #671
• build(deps): bump the github-actions group across 1 directory with 3 updates by @dependabot[bot] in #669
• feat: Unify piecewise API behind add_piecewise_formulation (sign + LP dispatch) by @FBumann in #638
• feat: add slopes_align to breakpoints() by @FabianHofmann in #672
• refac(piecewise): introduce Slopes class, remove breakpoints(slopes=) mode by @FBumann in #673
• fix: serialize MultiIndex level names as JSON for scipy netCDF backend by @FBumann in #674
• docs: restructure upcoming changelog and add missing PRs by @FBumann in #675
• chore: Update release notes for v0.7.0 by @FBumann in #676

New Contributors

• @finozzifa made their first contribution in #600
• @davide-f made their first contribution in #588
• @danielelerede-oet made their first contribution in #601
• @mcoughlin made their first contribution in #593
• @bobbyxng made their first contribution in #623
• @MaykThewessen made their first contribution in #619

Full Changelog: v0.6.4...v0.7.0

v0.6.7

Full Changelog: v0.6.6...v0.6.7

v0.6.6

Full Changelog: v0.6.5...v0.6.6

v0.6.5

Full Changelog: v0.6.4...v0.6.5

v0.6.4

What's Changed

• fix: update HiGHS URLs and naming by @FabianHofmann in #585
• Add Knitro solver support by @FabianHofmann in #532

Full Changelog: v0.6.3...v0.6.4

v0.6.3

What's Changed

• Bugfix/fix readthedocs by @RobbieKiwi in #574
• fix polars dep lb by @FBumann in #578
• fix: revert np.where to xarray.where when adding vars/ constraints by @lkstrp in #575
• test and future warning for #575 by @lkstrp in #579
• Reinsert broadcasted mask by @FabianHofmann in #580
• fix: add coords and dims to as_dataarray by @FabianHofmann in #582

Full Changelog: v0.6.2...v0.6.3

v0.6.2

What's Changed

• add sphinx_copybutton extension by @mosc9575 in #553
• Bugfix/gurobi license and docs by @RobbieKiwi in #556
• Fix multiplication of constant-only LinearExpression by @FabianHofmann in #568
• perf: speed up LP file writing (2.5-3.9x on large models, no regressions on small) by @FBumann in #564
• Add auto_mask parameter to Model class by @FBumann in #555

New Contributors

• @mosc9575 made their first contribution in #553

Full Changelog: v0.6.1...v0.6.2

v0.6.1

What's Changed

• Fix -0.0 handling in lp writer by @FBumann in #544
• fix: don't init gurobi on import by @lkstrp in #548

Full Changelog: v0.6.0...v0.6.1