chore(release): Manually add project changelog

CHANGELOG.md

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+<a name="1.8.0"></a>
+# [1.8.0](https://github.com/webpack/karma-webpack/compare/v1.7.0...v1.8.0) (2016-08-03)
+
+### Bug Fixes
+
+* TypeError: callback is not a function. ([#151](https://github.com/webpack/karma-webpack/issues/151)) ([5219b7d](https://github.com/webpack/karma-webpack/commit/5219b7d)), closes [#151](https://github.com/webpack/karma-webpack/issues/151)
+* Karma no provider errors. ([#146](https://github.com/webpack/karma-webpack/issues/146)) ([24628dc](https://github.com/webpack/karma-webpack/commit/24628dc)), closes [#146](https://github.com/webpack/karma-webpack/issues/146)
+
+
+### Features
+
+* **Webpack Blocker** Adding webpack blocker to stop karma from running tests until build is finished ([d67732d](https://github.com/webpack/karma-webpack/commit/d67732d))