message: MAINT: Use latest itertools (only a dev-dependency)
diff: @@ -33,7 +33,7 @@ ordermap = { version = "0.2.2", optional = true }
  [dev-dependencies]
  rand = "0.3"
  odds = { version = "0.2.19" }
  -itertools = { version = "0.5" }
  +itertools = { version = "0.6.2" }
  defmac = "0.1"
  [features]
  