commit 1e22b36c61d52bb0446a63f5994b1fbe8c7ce0db (HEAD, tag: v1.31.1, origin/v1.31.x, origin/HEAD, v1.31.x)
Author:     Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
AuthorDate: 2018-04-07
Commit:     Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
CommitDate: 2018-04-07

    Update manual pages

commit 0f818baf61c5762093d23520f7ee513d6e9e942e
Author:     Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
AuthorDate: 2018-04-07
Commit:     Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
CommitDate: 2018-04-07

    Bump up version number to 1.31.1

commit c411d16945d658a181d92ca36bfea30853edab37
Author:     Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
AuthorDate: 2018-04-07
Commit:     Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
CommitDate: 2018-04-07

    Fix frame handling
