CHANGELOG.md in lbfgsb-0.3.1 vs CHANGELOG.md in lbfgsb-0.3.2

@@ -1,4 +1,8 @@
+## 0.3.2
+- Refactor native extension codes.
+- Update documentations.
+
 ## 0.3.1
 - Add GC guard to narray given to native extension method.
 
 ## 0.3.0
 - Add library name prefix to functions derived from blas and linpack