v0.9.0

Added

• Reaction rates can now be arbitrary formulas, instead of just LMA (Python
  API).
• Reaction rates can be internally sparse, leading to drastic speedups for
  models with many species (thank you @maurosilber!) (Python API).
• One can specify to not export all variables, with the var_names argument
  (thank you @maurosilber!) (Python API).

Changed

• The seed argument was renamed to rng to conform to SPEC-7 (Python API).

Dependencies

• upgrade pyo3 to 0.23

Documentation

• organize badges on README
• add badges for the PyPI version and RTD docs
• fix name of optional dependencies in rtd config
• add rust tooling to the readthedocs environment
• fix readthedocs install
• add a readthedocs page
• document the Python interface

Fixed

• fix arbitrary rates overwriting previous definitions
• fix benches with a sparsity argument

Miscellaneous

• check all targets in pre-commit
• add tests for exprs
• robustify Gillespie tests
• Add tests for gillespie::Jump
• add tests for gillespie::Rate
• add tests for gillespie::Rate
• fix pixi build task
• update CI
• update pre-commit hooks
• upgrade dependencies
• cancel CI on repeated PRs
• enable dependabot update grouping
• use a markdown formatter
• add custom pre-commit CI message
• enable mypy
• update pre-commit hooks
• make ruff show fixes
• enable docstring format by ruff
• add pytest config options