Make sure that the API of both AHasher variants is the same

src/aes_hash.rs

@@ -21,6 +21,12 @@ pub struct AHasher {
 }
 
 impl AHasher {
+    /// Creates a new hasher keyed to the provided key.
+    #[inline]
+    pub fn new_with_key(key: u64) -> AHasher {
+        AHasher { buffer: [key, !key] }
+    }
+
     /// Creates a new hasher keyed to the provided keys.
     /// # Example
     ///

src/fallback_hash.rs

@@ -31,7 +31,7 @@ impl AHasher {
 
     /// Creates a new hasher keyed to the provided keys.
     #[inline]
-    pub(crate) fn new_with_keys(key1: u64, key2: u64) -> AHasher {
+    pub fn new_with_keys(key1: u64, key2: u64) -> AHasher {
         AHasher {
             buffer: key1 ^ (key2.rotate_left(ROT)),
         }

src/lib.rs

@@ -246,4 +246,10 @@ mod test {
         let bytes: u64 = as_array!(input, 8).convert();
         assert_eq!(bytes, 0x6464646464646464);
     }
+
+    #[test]
+    fn test_ahasher_construction() {
+        let _ = AHasher::new_with_key(1234);
+        let _ = AHasher::new_with_keys(1245, 5678);
+    }
 }