Update changelog. [ci skip]

Author: Abscissa

CHANGELOG.md

@@ -1,8 +1,8 @@
-v2.3.0 - TBD
+v2.3.0 - 2019-02-23
 =====================
 
 - **New:** [#188](https://github.com/mysql-d/mysql-native/issues/188):
-	Expose column names in Row struct. (@jpf91)
+	Expose column names in Row struct via `Row.getName(index)`. (@jpf91)
 - **Tests:** [#186](https://github.com/mysql-d/mysql-native/issues/186):
 	Fix metadata tests on MariaDB 10.2 and 10.3
 - **Tests:** Rework travis config and scripts, including: