updated to work with conduit >= 1.0

First commit (SHA: 2ea3da99aa7ef5f197fff650d930605628566ecd): 
Updated Type signutures to work with upstream version of conduit. (>= 1.0)

In the second commit (SHA: 78ccd4ee4af0f6111a4dd187f3e7be4f6e297e1e) there is a version bump to 0.3.0.0 of bits-conduit.