message: Updated rayon dependency to version 1.6
diff: @@ -28,7 +28,7 @@ bincode = { version = "1.3.3", optional = true }
  ctrlc = { version = "3.2.4", optional = true }
  getrandom = { version = "0.2", features = ["js"], optional = true }
  gnuplot = { version = "0.0.37", optional = true }
  -rayon = { version = "1.5.3", optional = true }
  +rayon = { version = "1.6.0", optional = true }
  serde = { version = "1.0", features = ["derive", "rc"], optional = true }
  serde_json = { version = "1.0", optional = true }
  slog = { version = "2.7", optional = true, features = ["dynamic-keys"] }
  