==================
- Refactored ``Step.crds_get_config_from_reference`` and
``Pipeline.get_config_from_reference`` to reduce memory when the input to
a pipeline is an association file, i.e. a ``ModelContainer``. In this case
the crds parameters are retrieved from the first model which is already opened. [63]
- Added a small edit to ``Step.get_config_from_reference`` to run datamodel
methods on the first contained model in a ModelContainer, rather than the
ModelContainer itself [67]
- Moved build configuration from ``setup.cfg`` to ``pyproject.toml`` to support PEP621 [56]