Rebop

Test release with release-plz.

Documentation

- Update image links in the README

Patch release to fix distribution to PyPI.

Added

- Added a `advance_one_reaction` to the API, that allows calling the Python API
`run` function with `nb_steps=0` in order to return all reactions.

Changed

- Upgrade PyO3 to v0.22.1.

Added

- It is now possible to specify a random seed from Python to run the simulator.

Changed

- Upgraded PyO3 to v0.21.2.
- Dropped support for Python 3.9, according to the SPEC-0 schedule.

Patch release to fix distribution to PyPI. The release is now happening
automatically from GitHub CI.

Added

- It is now possible to refer to species amounts in the macro rate expressions.
The rate expressions are still multiplied by the law of mass action
constructed from the reactions.
- Functions have been added to the API engine to set time and species amounts.
- An optional argument to the Python API has been added to specify reverse
reactions more easily.

Changed

- The Python results are now returned as an `xarray.Dataset` instead of a
dictionary.
- The API engine has been rewritten to make it faster and more modular.
Notably, the API to specify reaction rates in Rust changed from enums to
vectors.