docs: Switch to keepachangelog

CHANGELOG.md

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-<a name="0.1.4"></a>
-## 0.1.4 (2019-11-03)
+# Change Log
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+<!-- next-header -->
+## [Unreleased] - ReleaseDate
+
+## 0.1.4 - 2019-11-03
 
 
 #### Bug Fixes
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 *   Use standard identifier rules to avoid doing umber checks ([107308a6](https://github.com/crate-ci/typos/commit/107308a655a425eb593bf5e4928572c16e6a9bdd))
 *   Only do hex check if digits are in identifiers ([68cd36d0](https://github.com/crate-ci/typos/commit/68cd36d0de90226dbc9d31c2ce6d8bf6b69adb5c))
 
-
-
+<!-- next-url -->
+[Unreleased]: https://github.com/assert-rs/predicates-rs/compare/v0.1.4...HEAD