https://speakerdeck.com/hopyoko 2018-06-14 01:48:33 -0400 Wed, 20 Jun 2018 00:00:00 -0400 https://speakerdeck.com/hopyoko/kadai3 https://speakerdeck.com/hopyoko/kadai3 Thu, 14 Jun 2018 00:00:00 -0400 https://speakerdeck.com/hopyoko/kadai2 https://speakerdeck.com/hopyoko/kadai2