chore: checkpoint before Python removal

vendor/tiny-keccak/benches/kangaroo.rs

@@ -0,0 +1,19 @@
+#![feature(test)]
+
+extern crate test;
+
+use test::Bencher;
+use tiny_keccak::{KangarooTwelve, Hasher};
+
+#[bench]
+fn bench_k12(b: &mut Bencher) {
+    let data = [0u8; 32];
+    b.bytes = data.len() as u64;
+
+    b.iter(|| {
+        let mut res = [0u8; 32];
+        let mut k12 = KangarooTwelve::new(&[]);
+        k12.update(&data);
+        k12.finalize(&mut res);
+    });
+}