Replace imp with importlib. Fixes #5 (#7)

Author: amyreese

diff_match_patch/tests/diff_match_patch_test.py

@@ -17,7 +17,7 @@
 limitations under the License.
 """
 
-import imp
+import importlib
 import os
 import sys
 import time
@@ -30,7 +30,7 @@
 
 # Force a module reload.  Allows one to edit the DMP module and rerun the tests
 # without leaving the Python interpreter.
-imp.reload(dmp_module)
+importlib.reload(dmp_module)
 
 
 class DiffMatchPatchTest(unittest.TestCase):