* acme: remove Client and BackwardsCompatibleClientV2
* remove ClientTestBase and some unused variables
* add ClientV2.get_directory
* tweak ToS callback code
* acme: update example to use ClientV2.get_directory
* simplify ToS callback further into one step
* further removal of acmev1-related code
- remove acme.client.ClientBase
- remove acme.mixins.VersionedLEACMEMixin
- remove acme.client.DER_CONTENT_TYPE
- remove various ACMEv1 special cases
- remove acme.messages.ChallengeResources.combinations
* remove .mixins.ResourceMixin, fields.resource, fields.Resource
and resource field from various .message classes.
* simplify acme.messages.Directory:
- remove Directory.register
- remove HasResourceType and GenericHasResourceType
- remove ability to look up Directory resources by anything other
than the exact field name in RFC8555 (section 9.7.5)
* remove acme.messages.OLD_ERROR_PREFIX and support the old prefix
* remove acme.mixins
* reorder imports
* add comment to Directory about resource lookups
* s/new-cert/newOrder/
* get rid of `resource` sillyness in tests
* remove acmev1 terms-of-service support from directory
* Add generic methods to save some casts, and fix lint
* Update current and oldest pinning
* Fix classes
* Remove some todos thanks to josepy 1.11.0
* Cleanup some useless pylint disable
* Finish complete typing
* Better TypeVar names
* Upgrade pinning and fix some typing errors
* Use protocol
* Fix types in apache
Co-authored-by: Brad Warren <bmw@users.noreply.github.com>
* Move acme tests to tests/ directory outside of acme module
* Fix call to messages_test in client_test
* Move test_util.py and testdata/ into tests/
* Update manifest to package tests
* Exclude pycache and .py[cod]
