Pynacl

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* **BACKWARDS INCOMPATIBLE:** Removed support for Python 2.7 and Python 3.5.
* **BACKWARDS INCOMPATIBLE:** We no longer distribute ``manylinux1``
wheels.
* Added ``manylinux2014``, ``manylinux_2_24``, ``musllinux``, and macOS
``universal2`` wheels (the latter supports macOS ``arm64``).
* Update ``libsodium`` to 1.0.18-stable (July 25, 2021 release).
* Add inline type hints.

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* Update ``libsodium`` to 1.0.18.
* **BACKWARDS INCOMPATIBLE:** We no longer distribute 32-bit ``manylinux1``
wheels. Continuing to produce them was a maintenance burden.
* Added support for Python 3.8, and removed support for Python 3.4.
* Add low level bindings for extracting the seed and the public key
from crypto_sign_ed25519 secret key
* Add low level bindings for deterministic random generation.
* Add ``wheel`` and ``setuptools`` setup_requirements in ``setup.py`` (485)
* Fix checks on very slow builders (481, 495)
* Add low-level bindings to ed25519 arithmetic functions
* Update low-level blake2b state implementation
* Fix wrong short-input behavior of SealedBox.decrypt() (517)
* Raise CryptPrefixError exception instead of InvalidkeyError when trying
to check a password against a verifier stored in a unknown format (519)
* Add support for minimal builds of libsodium. Trying to call functions
not available in a minimal build will raise an UnavailableError
exception. To compile a minimal build of the bundled libsodium, set
the SODIUM_INSTALL_MINIMAL environment variable to any non-empty
string (e.g. ``SODIUM_INSTALL_MINIMAL=1``) for setup.

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* Added support for Python 3.7.
* Update ``libsodium`` to 1.0.16.
* Run and test all code examples in PyNaCl docs through sphinx's
doctest builder.
* Add low-level bindings for chacha20-poly1305 AEAD constructions.
* Add low-level bindings for the chacha20-poly1305 secretstream constructions.
* Add low-level bindings for ed25519ph pre-hashed signing construction.
* Add low-level bindings for constant-time increment and addition
on fixed-precision big integers represented as little-endian
byte sequences.
* Add low-level bindings for the ISO/IEC 7816-4 compatible padding API.
* Add low-level bindings for libsodium's crypto_kx... key exchange
construction.
* Set hypothesis deadline to None in tests/test_pwhash.py to avoid
incorrect test failures on slower processor architectures. GitHub
issue 370

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* Update hypothesis minimum allowed version.
* Infrastructure: add proper configuration for readthedocs builder
runtime environment.

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* Update ``libsodium`` to 1.0.15.
* Infrastructure: add jenkins support for automatic build of
``manylinux1`` binary wheels
* Added support for ``SealedBox`` construction.
* Added support for ``argon2i`` and ``argon2id`` password hashing constructs
and restructured high-level password hashing implementation to expose
the same interface for all hashers.
* Added support for 128 bit ``siphashx24`` variant of ``siphash24``.
* Added support for ``from_seed`` APIs for X25519 keypair generation.
* Dropped support for Python 3.3.