Merge pull request #62 from PrivateStorageio/55.more-voucher-metadata

docs/source/interface.rst

src/_zkapauthorizer/_plugin.py

src/_zkapauthorizer/model.py

src/_zkapauthorizer/tests/strategies.py

src/_zkapauthorizer/tests/test_client_resource.py

src/_zkapauthorizer/tests/test_controller.py

src/_zkapauthorizer/tests/test_model.py

src/_zkapauthorizer/tests/test_plugin.py

zkapauthorizer.nix