Prepare 0.15.0

[aseyboldt]

No description provided.

[Copilot]

Pull Request Overview

This PR prepares a new release by bumping package and dependency versions, adds support for zero-size variables and low-rank mass matrix sampling in both Stan and PyMC backends, and updates the Python sampling interface with new parameters.

• Add tests for low-rank mass matrix and zero-size variables in Stan and PyMC
• Extend sample() interface with optional parameters (low_rank_modified_mass_matrix, transform_adapt, progress_*)
• Bump crate and dependency versions for release

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/test_stan.py	Added low-rank and zero-size variable tests for Stan backend
tests/test_pymc.py	Added low-rank and zero-size variable tests for PyMC backend
src/stan.rs	Handle empty parameter string and track sample count
src/pymc.rs	Track sample count and update pointer arithmetic
python/nutpie/sample.py	Extend sample signature with new options
Cargo.toml	Bump package version and dependencies
CHANGELOG.md	Document release 0.15.0 changes

Comments suppressed due to low confidence (4)

tests/test_stan.py:60

• The test_empty test has no assertions and will always pass; consider adding assertions (or marking it xfail) to verify the expected behavior for zero-size variables.

nutpie.sample(compiled_model)

tests/test_pymc.py:44

• The test_low_rank test does not assert any properties of trace.posterior.a; consider adding assertions on its shape or values to ensure the low-rank path is exercised.

trace.posterior.a  # noqa: B018

src/pymc.rs:18

• The trait CheckedEuclid may not exist under rand_distr::num_traits; verify the correct trait import for checked_div_rem_euclid or use standard integer methods for division and remainder.

use rand_distr::num_traits::CheckedEuclid;

src/pymc.rs:180

• Using unwrap_or((self.count, 0)) hides a potential division-by-zero or invalid division case; handle zero size explicitly or propagate an error rather than defaulting.

.checked_div_rem_euclid(&size)

[Copilot]

The docstring isn’t updated to cover the new parameters progress_template, progress_style, and progress_rate, and the documented default for progress_rate (500) doesn't match the code default (100); please align the documentation with the signature.