Merge branch 'upstream' into kyoichiroiizuka
Merge commit 'a6e423144fae5369d47fe91b91a635c959d48f6e' into kyoichiroiizuka
Merge commit 'b83995f3888f0e6858e479901227bb6d4f08fae3' into kyoichiroiizuka
add time
User has user name column (please migrate after applying)