chore: checkpoint before Python removal

vendor/sha1/benches/mod.rs

@@ -0,0 +1,14 @@
+#![feature(test)]
+extern crate test;
+
+use digest::bench_update;
+use sha1::Sha1;
+use test::Bencher;
+
+bench_update!(
+    Sha1::default();
+    sha1_10 10;
+    sha1_100 100;
+    sha1_1000 1000;
+    sha1_10000 10000;
+);