What's Changed
**Breaking changes:**
* Python package name has changed to `cellxgene_census`.
**Fixes**:
* Fix Python package import error on Python 3.8
**Summary of commits:**
* acceptance test run by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/310
* Modify GHA to push builder Docker image by ebezzi in https://github.com/chanzuckerberg/cellxgene-census/pull/312
* Add requirements.txt for notebooks by ebezzi in https://github.com/chanzuckerberg/cellxgene-census/pull/308
* rename ECR repo by ebezzi in https://github.com/chanzuckerberg/cellxgene-census/pull/334
* clean up dependencies for cell_census by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/337
* Rename to CELLxGENE Discover Census in README.md by ebezzi in https://github.com/chanzuckerberg/cellxgene-census/pull/333
* Python API name changes by ebezzi in https://github.com/chanzuckerberg/cellxgene-census/pull/339
* Add builder sub-module for old build cleanup by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/331
* name migration for tools/builder by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/340
* package name changes in docstrings by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/343
* [r] rename CellCensus to cellxgene.census by mlin in https://github.com/chanzuckerberg/cellxgene-census/pull/344
* add old package name redirect by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/346
* Adds cell census release info and cleans up storage policy by pablo-gar in https://github.com/chanzuckerberg/cellxgene-census/pull/314
* Add notebook guidelines by pablo-gar in https://github.com/chanzuckerberg/cellxgene-census/pull/316
* update package metadata to tag maturity as beta by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/348
* update cell census name in docstrings/md files by bkmartinjr in https://github.com/chanzuckerberg/cellxgene-census/pull/347
**Full Changelog**: https://github.com/chanzuckerberg/cellxgene-census/compare/v0.12.0...v0.13.0