feat: add blake3 160, 192 & 256 bits

closes #6

src/hash/blake/tests.rs

@@ -0,0 +1,20 @@
+use super::*;
+use crate::Vec;
+use proptest::prelude::*;
+
+proptest! {
+    #[test]
+    fn blake160_wont_panic_with_arbitrary_input(ref vec in any::<Vec<u8>>()) {
+        Blake3_160::hash(vec);
+    }
+
+    #[test]
+    fn blake192_wont_panic_with_arbitrary_input(ref vec in any::<Vec<u8>>()) {
+        Blake3_192::hash(vec);
+    }
+
+    #[test]
+    fn blake256_wont_panic_with_arbitrary_input(ref vec in any::<Vec<u8>>()) {
+        Blake3_256::hash(vec);
+    }
+}