Pyvespa

The features added make it possible to run the [multi-vector-indexing](https://github.com/vespa-engine/sample-apps/tree/master/multi-vector-indexing) sample application in pyvespa:

* Add support for Component config: https://github.com/vespa-engine/pyvespa/pull/548
* Add support for synthetic fields: https://github.com/vespa-engine/pyvespa/pull/547

* Allow to specify match-features in RankProfile: https://github.com/vespa-engine/pyvespa/pull/525
* Add utility to create a vespa feed: https://github.com/vespa-engine/pyvespa/pull/536

* Require minimum Python 3.8
* Support setting default stemming of Schema: https://github.com/vespa-engine/pyvespa/pull/510
* Add support for first phase ranking: https://github.com/vespa-engine/pyvespa/pull/512
* Support using key/cert pair generated by [Vespa CLI](https://docs.vespa.ai/en/vespa-cli.html): https://github.com/vespa-engine/pyvespa/pull/513
* Implement deploy_from_disk for Vespa Cloud: https://github.com/vespa-engine/pyvespa/pull/514

* Improved error handling: https://github.com/vespa-engine/pyvespa/pull/498
* Use `allowed_methods` in [urllib3.util.Retry](https://urllib3.readthedocs.io/en/stable/reference/urllib3.util.html#urllib3.util.Retry): https://github.com/vespa-engine/pyvespa/pull/501

* Support for rank profile `inputs`: https://github.com/vespa-engine/pyvespa/issues/482

* A local Docker deployment can now open the debug port (default 5005) into the container: 399
* Field additions:
* The `match` block for fields is now supported: 403
* Support for the `weight` and `bolding` fields: 406
* Implement Struct Field, and allow Field to use it: 413
* Schema Document Summary is added: 408
* Add support for stemming, query-command, rank, and implement Struct for Documents: 416
* ApplicationConfiguration is added: 421
* rank-profile additions 424:
* `weight`
* `type-hints` for eq and repr
* `rank_type`
* `rank-properties`
* Support for [validation-overrides.xml](https://docs.vespa.ai/en/reference/validation-overrides.html): #426
* Throw HTTPError on failures: 466