Josepy

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* Added support for Python 3.11 and 3.12.
* Support for Python 3.7 has been deprecated and will be removed in the next
scheduled release.
* Dropped support for Python 3.6.
* Added a new valid PGP key for signing our PyPI packages with the fingerprint
F2871B4152AE13C49519111F447BF683AA3B26C3

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* Support for Python 3.6 has been deprecated and will be removed in the next
scheduled release.
* Corrected some type annotations.

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* Corrected some type annotations.
* Dropped support for cryptography<1.5.
* Added the top level attributes josepy.JWKEC, josepy.JWKOct, and
josepy.ComparableECKey for convenience and consistency.

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* Added support for Python 3.10.
* We changed the PGP key used to sign the packages we upload to PyPI. Going
forward, releases will be signed with one of three different keys. All of
these keys are available on major key servers and signed by our previous PGP
key. The fingerprints of these new keys are:
- BF6BCFC89E90747B9A680FD7B6029E8500F7DB16
- 86379B4F0AF371B50CD9E5FF3402831161D1D280
- 20F201346BF8F3F455A73F9A780CC99432A28621

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* josepy is now compliant with PEP-561: type checkers will fetch types from the inline
types annotations when josepy is installed as a dependency in a Python project.
* Added a `field` function to assist in adding type annotations for Fields in classes.
If the field function is used to define a `Field` in a `JSONObjectWithFields` based
class without a type annotation, an error will be raised.
* josepy's tests can no longer be imported under the name josepy, however, they are still
included in the package and you can run them by installing josepy with "tests" extras and
running `python -m pytest`.

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* Removed pytest-cache testing dependency.
* Fixed a bug that sometimes caused incorrect padding to be used when
serializing Elliptic Curve keys as JSON Web Keys.