self.to_int() is really returning ints

Author: cclauss

ciphers/hill_cipher.py

@@ -155,8 +155,8 @@ def make_decrypt_key(self):
         """
         >>> hill_cipher = HillCipher(numpy.array([[2, 5], [1, 6]]))
         >>> hill_cipher.make_decrypt_key()
-        array([[ 6., 25.],
-               [ 5., 26.]])
+        array([[ 6, 25],
+               [ 5, 26]])
         """
         det = round(numpy.linalg.det(self.encrypt_key))