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# History
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Important changes are emphasized.
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## master
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## Unreleased
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## 17.0.0
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- **Breaking:** Drop support for Python 3.6
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- Fix wheels for Apple M1
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- Upgrade [libsecp256k1][] to the latest available version
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## 16.0.0
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- Wheels for Apple Silicon and musl linux (Alpine)
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- No wheels for PyPy until the build system is fixed
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## 15.0.1
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- Fix the `combine` method of `PublicKey`
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## 15.0.0
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- **Breaking:** Drop support for Python 2
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- **Breaking:** Binary wheels for CPython require version 19.3 or later of ``pip`` to install
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- Build AArch64 binary wheels for Linux
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- Build binary wheels for PyPy3.6 7.3.3 & PyPy3.7 7.3.3 on Linux
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- Upgrade [libsecp256k1][] to the latest available version
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- Upgrade libgmp to the latest available version
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- Introduce `COINCURVE_UPSTREAM_REF` environment variable to select an alternative [libsecp256k1][] version when building from source
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- Support PEP 561 type hints
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- Added support for supplying a custom nonce to `PrivateKey.sign_recoverable`
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## 14.0.0
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**IMPORTANT: This will be the final release that supports Python 2.**
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- **New:** Binary wheels for Python 3.9
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- **Breaking:** Drop support for Python 3.5
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- Fetch [libsecp256k1][] source if the system installation lacks ECDH support
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- Fix innocuous `setuptools` warning when building from source
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- Switch CI/CD to GitHub Actions
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## 13.0.0
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- **New:** Binary wheels for Python 3.8
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- Support building on OpenBSD
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- Improve handling of PEM private key deserialization
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- Improve ECDH documentation
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- Improvements from [libsecp256k1][] master
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## 12.0.0
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- **New:** Binary wheels on Linux for PyPy3.6 v7.1.1-beta
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- **New:** Binary wheels on macOS for Python 3.8.0-alpha.3
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- **New:** Binary wheels on Linux are now also built with the new [manylinux2010](https://www.python.org/dev/peps/pep-0571) spec for 64-bit platforms
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- Improvements from [libsecp256k1][] master
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## 11.0.0
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- Fix some linking scenarios by placing bundled [libsecp256k1][] dir first in path
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- Allow override of system [libsecp256k1][] with environment variable
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- Add benchmarks
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- Use Codecov to track coverage
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- Use black for code formatting
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## 10.0.0
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- Support tox for testing
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- Compatibility with latest [libsecp256k1][] ECDH API
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- Make libgmp optional when building from source
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## 9.0.0
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- Fixed wheels for macOS
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- **Breaking:** Drop support for 32-bit macOS
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## 8.0.2
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- No longer package tests
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## 8.0.0
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- **New:** Binary wheels for Python 3.7
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- **Changed:** Binary wheels on macOS for Python 3.5 now use Homebrew
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Python for compilation due to new security requirements
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- Make build system support new GitHub & PyPI security requirements
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- Improvements from [libsecp256k1][] master
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## 7.1.0
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- Pin version of [libsecp256k1][]
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- Improve docs
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## 7.0.0
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- Improvements from [libsecp256k1][] master
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- Fix build script
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## 6.0.0
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- Resolved #6. You can choose to use this or remain on `5.2.0`. This will only be a temporary change, see 3e93480b3e38c6b9beb0bc2de83bc3630fc74c46.
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## 5.2.0
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- Added support for supplying a custom nonce to `PrivateKey.sign`
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## 5.1.0
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- Added `PublicKey.combine_keys` class method
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- Improvements to documentation
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## 5.0.1
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- Fixed an issue where secret validation would occasionally erroneously error
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on user-provided secrets (secrets not generated by Coincurve itself) if there
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were not exactly 256 bits of entropy. See #5.
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## 5.0.0
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- **Breaking:** Coincurve is now dual-licensed under the terms of `MIT` and `Apache-2.0`
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- Performance improvements from [libsecp256k1][] master
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- Improvements to documentation.
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## 4.5.1
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- First public stable release
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