Adds a changelog

Author: j-ulrich

CHANGELOG.md

@@ -0,0 +1,39 @@
+# Changelog # {#changelog}
+
+\brief The changelog of the http-status-codes library.
+
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+This changelog follows the [Keep a Changelog](http://keepachangelog.com) format.
+
+
+---
+
+## [1.1.0] - 2018-10-06 ##
+
+### Added ###
+- Status codes 103 Early Hints, 208 Already Reported, 508 Loop Detected and 510 Not Extended
+
+
+### Fixed ###
+- Removed redundant "HttpStatus_XXX" documentation comments in C variant.
+
+
+---
+
+
+## 1.0.0 - 2017-11-02 ##
+Initial (actually unversioned) release.
+
+### Added ###
+- C, C++, C++11 and Qt variants.
+- Status codes
+- Category/class tests (`isXXX()` functions)
+- Reason phrases
+- `QNetworkReply::NetworkError` mapping
+
+
+---
+
+
+[1.1.0]: https://