message: Disable default features on num-rational.
  In particular, this removes the dependency on num-bigint.
diff: @@ -24,7 +24,7 @@ path = "./src/lib.rs"
  [dependencies]
  byteorder = "1.0.0"
  num-iter = "0.1.32"
  -num-rational = "0.1.32"
  +num-rational = { version = "0.1.32", default-features = false }
  num-traits = "0.1.32"
  enum_primitive = "0.1.0"
  glob = "0.2.10"
  