add changelog

CHANGELOG.md

@@ -0,0 +1,21 @@
+<a name="unreleased"></a>
+## [Unreleased]
+
+<a name="v1.1.0"></a>
+## [v1.1.0] - 2018-11-10
+- Add hash and signature validation
+- Update dependencies with `go get -u` and `go mod tidy`
+
+### Pull Requests
+- Merge pull request [#16](https://github.com/rhysd/go-github-selfupdate/issues/16) from tobiaskohlbau/addHashSignature
+- Merge pull request [#15](https://github.com/rhysd/go-github-selfupdate/issues/15) from tobiaskohlbau/patch-1
+
+
+<a name="v1.0.0"></a>
+## [v1.0.0] - 2018-09-23
+
+First release :tada:
+
+[Unreleased]: https://github.com/rhysd/go-github-selfupdate/compare/v1.1.0...HEAD
+[v1.1.0]: https://github.com/rhysd/go-github-selfupdate/compare/v1.0.0...v1.1.0
+[v1.0.0]: https://github.com/rhysd/go-github-selfupdate/compare/example-1.2.4...v1.0.0