message: drop some patch bounds
diff: @@ -37,9 +37,9 @@ uuid = { version = "0.5", features = ["v4", "serde"] }
  chan = "0.1"
  version = "2"
  crossbeam = "0.2"
  -futures = "0.1.9"
  -futures-cpupool = "0.1.2"
  -error-chain = "0.8.1"
  +futures = "0.1"
  +futures-cpupool = "0.1"
  +error-chain = "0.8"
  [target.'cfg(windows)'.dependencies]
  winapi = "0.2"
  