What's Changed
* Add `cmd` extension point to allow MF extensions to extend it by romain-intel in https://github.com/Netflix/metaflow/pull/1143
* Fix periodic messages printed at runtime by romain-intel and jackie-ob in https://github.com/Netflix/metaflow/pull/1061, https://github.com/Netflix/metaflow/pull/1151 and https://github.com/Netflix/metaflow/pull/1159
* Pass datastore_type to validate_environment by romain-intel in https://github.com/Netflix/metaflow/pull/1152
* Support `kubernetes_conn_id` in Airflow integration by valayDave in https://github.com/Netflix/metaflow/pull/1153
* Use json to dump/load decorator specs by romain-intel in https://github.com/Netflix/metaflow/pull/1144
* argo use kubernetes client class by oavdeev in https://github.com/Netflix/metaflow/pull/1163
* Rewrite IncludeFile implementation by romain-intel in https://github.com/Netflix/metaflow/pull/1109
* Add options to make card generation faster in some cases by romain-intel in https://github.com/Netflix/metaflow/pull/1167
* Env escape improvements and bug fixes by romain-intel in https://github.com/Netflix/metaflow/pull/1166
* Allow figures in `Image.from_matplotlib` by valayDave in https://github.com/Netflix/metaflow/pull/1147
* Bump for release by romain-intel in https://github.com/Netflix/metaflow/pull/1168
**Full Changelog**: https://github.com/Netflix/metaflow/compare/2.7.12...2.7.13