Release v0.5.0

Release v0.4.0

Reflect name changes in sparsediffengine (#14)

* change version temporarily and rename matrix structure

* small edit

* update version

* Fix SparseDiffEngine: replace accidental symlink with submodule pointer at v0.3.0

Sync convolve and matmul convention (#13)

* sync SparseDiffEngine and adapt dense matmul bindings

Bump SparseDiffEngine submodule to origin/main (45f88d0), which pulls in
the new convolve atom plus dance858's cleanup of the dense matmul
constructor data-pointer convention.

new_left_matmul_dense / new_right_matmul_dense now require exactly one
of param_node / data to be non-NULL (constants: (NULL, data); parameters:
(capsule, NULL)) — the engine fprintf/exit(1)s otherwise. Update the
dense branches of make_left_matmul and make_right_matmul bindings to
match: drop the PARAM_FIXED wrapper we were building for the constant
case, and forward data=NULL when a real parameter capsule is supplied.
DNLP's helpers.py still hands in A.flatten() in both cases; the binding
absorbs the new convention so no DNLP-side change is needed.

Verified: SparseDiffEngine ctest (267/267), DNLP nlp_tests (217 passed,
77 skipped), DNLP test_convolution + test_atoms (119 passed).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* trim comments on dense matmul bindings

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Bindings for diag_mat, upper_tri, and vstack atoms (#7)

* Bindings for diag_mat, kron_left, upper_tri, and vstack atoms

Add Python C extension bindings for four new SparseDiffEngine atoms:
- diag_mat: extract diagonal from square matrix
- upper_tri: extract strict upper triangular elements
- kron_left: Kronecker product kron(C, X) with constant sparse C
- vstack: vertical stack of expressions (via transpose-hstack composition)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Update SparseDiffEngine submodule with main merge

Merges SparseDiffEngine main into adds-more-affine-atoms branch to
pick up folder restructuring and parameter support while preserving
diag_mat, upper_tri, and vstack atoms.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* pin diffengine to tag

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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

release v0.2.0

make bindings consistent with sparsediffengine folder refactor (#11)

* reflect sparsediffengine refactor in bindings'

* update includes to reflect sparsediffengine structure

* bump version to 0.1.6 and update SparseDiffEngine submodule

Bindings for Gaussian CDF atom (#6)

* bindings

* bump version to 0.1.5 and update SparseDiffEngine submodule

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

fix: update SparseDiffEngine submodule with release CI fix

Updates submodule to include OpenBLAS install step in release workflow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Merge pull request #2 from SparseDifferentiation/coo-support

[WIP] COO support