Update CHANGELOG

Author: jhnns

CHANGELOG.md

@@ -1,6 +1,11 @@
 Changelog
 ---------
 
+### 2.2.3
+
+- Fix missing path information in source map [#73](https://github.com/webpack/less-loader/pull/73)
+- Add deprecation warning [#84](https://github.com/webpack/less-loader/issues/84)
+
 ### 2.2.2
 
 - Fix issues with synchronous less functions like `data-uri()`, `image-size()`, `image-width()`, `image-height()` [#31](https://github.com/webpack/less-loader/issues/31) [#38](https://github.com/webpack/less-loader/issues/38) [#43](https://github.com/webpack/less-loader/issues/43) [#58](https://github.com/webpack/less-loader/pull/58)