Log Message:
2.0.3 2016-09-07 22:03:00+0000
 - [file] don't use `readdir_r` on Linux, Solaris #1046 #1052
          (Frederik Deweerdt, Kazuho Oku)
 - [http2] fix negative error code sent when cancelling a pushed
           stream #1039 (Frederik Deweerdt)
 - [http2] fix a bug that may cause a stream to stall #1040 (Frederik
           Deweerdt)
 - [http2] fix a bug that reset the stream when receiving HEADERS
           after PRIORITY #1043 (Frederik Deweerdt)
 - [mruby] fix mruby handler becoming unusable after failed connection
           in http_request on FreeBSD #1062 (Kazuho Oku)