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CHANGELOG.md

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+**This changelog is not the libsecp256k1-zkp's changelog.**
+Instead, it is the changelog of the upstream library [libsecp256k1](https://github.com/bitcoin-core/secp256k1).
+
+# Changelog
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+## [Unreleased]
+
+## [0.2.0] - 2022-12-12
+
+### Added
+ - Added `secp256k1_selftest`, to be used in conjunction with `secp256k1_context_static`.
+
+### Changed
+ - Enabled modules schnorrsig, extrakeys and ECDH by default in `./configure`.
+
+### Deprecated
+ - Deprecated context flags `SECP256K1_CONTEXT_VERIFY` and `SECP256K1_CONTEXT_SIGN`. Use `SECP256K1_CONTEXT_NONE` instead.
+ - Renamed `secp256k1_context_no_precomp` to `secp256k1_context_static`.
+
+### ABI Compatibility
+
+Since this is the first release, we do not compare application binary interfaces.
+However, there are unreleased versions of libsecp256k1 that are *not* ABI compatible with this version.
+
+## [0.1.0] - 2013-03-05 to 2021-12-25
+
+This version was in fact never released.
+The number was given by the build system since the introduction of autotools in Jan 2014 (ea0fe5a5bf0c04f9cc955b2966b614f5f378c6f6).
+Therefore, this version number does not uniquely identify a set of source files.