Version 0.36.0 fatal error

[ThrawnCA]

We are seeing fatal errors when running the latest 0.36.0 version of this module as part of the CKAN (https://github.com/ckan/ckan) Validation plugin:

File "/usr/lib/ckan/default/lib64/python3.9/site-packages/jsonschema/__init__.py", line 13, in <module>
  from jsonschema._format import FormatChecker
File "/usr/lib/ckan/default/lib64/python3.9/site-packages/jsonschema/_format.py", line 11, in <module>
  from jsonschema.exceptions import FormatError
File "/usr/lib/ckan/default/lib64/python3.9/site-packages/jsonschema/exceptions.py", line 15, in <module>
  from referencing.exceptions import Unresolvable as _Unresolvable
File "/usr/lib/ckan/default/lib64/python3.9/site-packages/referencing/__init__.py", line 5, in <module>
  from referencing._core import Anchor, Registry, Resource, Specification
File "/usr/lib/ckan/default/lib64/python3.9/site-packages/referencing/_core.py", line 18, in <module>
  from referencing.typing import URI, Anchor as AnchorType, D, Mapping, Retrieve
File "/usr/lib/ckan/default/lib64/python3.9/site-packages/referencing/typing.py", line 22, in <module>
  D = TypeVar("D", default=Any)

Our system appears to have installed typing-extensions 4.3.0. Perhaps referencing 0.36.0 requires a newer version?

[Julian]

Yes, #211 just added a lower pin for those of you on older versions of typing-extensions, it'll go out in a moment. Thanks.