Update snake_case and itertools

Author: Markus Westerlind

diffus/Cargo.toml

@@ -29,11 +29,11 @@ path = "src/lib.rs"
 
 
 [dependencies]
-itertools = "0.9"
+itertools = "0.10"
 
 indexmap = { version = "1", optional = true }
 uuid = { version = ">=0.5", optional = true }
-snake_case = { version = "0.2", optional = true }
+snake_case = { version = "0.3", optional = true }
 
 serde = { version = "1.0", features = [ "derive" ], optional = true }