ietfparse>=1.5.1
sprockets.mixins.mediatype[msgpack]>=2.0.0
tornado>=4.2.0,<6

ietfparse>=1.5.1
sprockets.mixins.mediatype[msgpack]>=2.0.0
tornado>=5

Drop support for Tornado < 5 Required by sprockets.mixins.mediatype
Drop support for Tornado < 5
Required by sprockets.mixins.mediatype
