Add 2.3.0 to changelog

Author: mzgoddard

README.md

@@ -112,6 +112,7 @@ In lieu of a formal styleguide, take care to maintain the existing coding style.
 
 ## Release History
 * Please see https://github.com/shama/stylus-loader/releases
+* 2.3.0 - Fix most use cases of relative path resolving (@mzgoddard), Add option to prefer a path resolver (webpack or stylus) (@mzgoddard)
 * 2.2.0 - Let stylus use option be just a function (@yuffiy), Track json calls as imports like use calls (@gnarf)
 * 2.1.2 - Fix support for stylus include config (@andrewburgess), Add block-level imports to listimports (@kenaniah)
 * 2.1.1 - Support Node 6 (@yyx990803), Test in webpack 1 and 2 (@phyllisstein)