chore: Update changelog for 3.0.0 final

Author: joshwiens

CHANGELOG.md

@@ -3,7 +3,31 @@
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
 <a name="3.0.0"></a>
-# [3.0.0](https://github.com/webpack-contrib/istanbul-instrumenter-loader/compare/v3.0.0-rc.1...v3.0.0) (2017-07-26)
+# [3.0.0](https://github.com/webpack-contrib/istanbul-instrumenter-loader/compare/v2.0.0...v3.0.0) (2017-07-26)
+
+
+### Bug Fixes
+
+* **index:** correct loader sourcemaps usage (#67) ([691b565](https://github.com/webpack-contrib/istanbul-instrumenter-loader/commit/691b565))
+* use latest API (`loader-utils`) (#61) ([27cf4eb](https://github.com/webpack-contrib/istanbul-instrumenter-loader/commit/27cf4eb))
+
+
+### Code Refactoring
+
+* upgrade to webpack-defaults (#51) ([b46a5c8](https://github.com/webpack-contrib/istanbul-instrumenter-loader/commit/b46a5c8))
+
+
+### Features
+
+* add `options` validation (`schema-utils`) (#65) ([091eded](https://github.com/webpack-contrib/istanbul-instrumenter-loader/commit/091eded))
+
+
+### BREAKING CHANGES
+
+* Enforces schema validation ( invalid configuration will throw )
+* Enforces Webpack standard NodeJS engines range.
+   at the time of merge `>= 4.3 < 5.0.0 || >= 5.10`.
+* Upgrades loader-utils to 1.1.0 which has a minimum NodeJS version of 4.