tree dc54eeec755654cd9ec06b832af7965097e11f09
parent a4f4c8cf041cf08ed60f18f6f9aa736c5e6420da
author rinrinne <rinrin.ne@gmail.com> 1425017753 +0900
committer rinrinne <rinrin.ne@gmail.com> 1425033381 +0900

Some improvements

* More decoupling interface from implementation.
* Remove unnecessary imports and comments.