Sysca

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* [feature] Support CRL generation via ``update-crl`` command.
* [feature] Support ed25519 keys, if ``cryptography`` supports them.
* [fix] Drop support of Python 2.

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* [feature] Add ``selfsign`` command.
* [feature] Switches ``--ocsp-must-staple`` and ``--ocsp-must-staple-v2`` to set OCSP Must-Staple flags.
* [feature] Switch ``--reset`` for sign to rewrite all info in CSR.
* [feature] Support all DN fields defined in ``x509`` module.
* [feature] Support multi-value attributes for DN.
* [fix] Sanitize ``--usage`` defaults.
* [dev] Move to pylist+pytest.

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* [pip] Add setup.cfg to allow universal wheel.

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* [fix] Ignore unicode errors when decoding stderr

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* [fix] Use utcnow() instead now(), otherwise local time is set as utc.
* [api] Flexible argument types

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* [pip] setup: use install_requires instead requires