Update itertools

Update to 0.10.1

Author: pierwill

Cargo.toml

@@ -33,7 +33,7 @@ rustfmt-format-diff = []
 generic-simd = ["bytecount/generic-simd"]
 
 [dependencies]
-itertools = "0.9"
+itertools = "0.10.1"
 toml = "0.5"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"