lightweight tag f1f922abdd4fed750bc27db28904b3eae2653809 1.8.1
Author:	Naoki Tomita <tomita@cpan.org>
Date:	Sat Aug 11 17:28:04 2018 +0900

commit f1f922abdd4fed750bc27db28904b3eae2653809
Author: Naoki Tomita <tomita@cpan.org>
Date:   Sat Aug 11 17:28:04 2018 +0900

    update LibSink

commit 96576aa8080e99e5a5df1ea424506dd3f36ca2f0
Author: Naoki Tomita <tomita@cpan.org>
Date:   Wed Aug 8 20:37:46 2018 +0900

    Update README.md

