Update changelog

Upstream changes from SPE (#15)

Add more detail to docstring for to_anndata() (#11)

Implement to_anndata() (#10)

Coerce SPE to SFE (#8)

- Supporting dolomite/alabaster workflows and refactoring image classes
- Coerce spatial experiment to spatial feature experiment
- Migrate to the newer github actions
- Update typehints, docs and tests

Implementing R/SFE's image classes with extent (#5)

Prepare for release (#2)

- Uses trusted publisher to publish the package
- Update readme with a quick example