Remote class should use CIDs

[expede]

Problem

Right now, the remote class accepts arbitrary Text. Both for reasons of documentation, and ensuring that we're expressing our intent, this should be strengthened at the type level.

Solution

Use the existing CID type newtype CID = CID { unaddress :: Text }

  ipfsCat   :: Text            -> m (Either ClientError File.Serialized)
  ipfsPin   :: Text            -> m (Either ClientError Pin.Response)
  ipfsUnpin :: Text -> Bool    -> m (Either ClientError Pin.Response)

should read

  ipfsCat   :: CID            -> m (Either ClientError File.Serialized)
  ipfsPin   :: CID            -> m (Either ClientError Pin.Response)
  ipfsUnpin :: CID -> Bool    -> m (Either ClientError Pin.Response)

[dholms]

Fixed in #6