fix: make lib work with new python versions

.travis.yml

@@ -3,8 +3,9 @@ dist: xenial
 python:
   - "2.7"
   - "3.4"
-  - "3.6"
-  - "3.7"
+  - "3.8"
+  - "3.9"
+  - "3.10"
 services: redis-server
 install: pip install .
 script: python setup.py test

hot_redis/types.py

@@ -1,9 +1,15 @@
 
+import sys
 import collections
 import operator
 import time
 import uuid
 
+if sys.version_info.major == 3 and sys.version_info.minor >= 10:
+    from collections.abc import MutableMapping
+else:
+    from collections import MutableMapping
+
 try:
     # Python 3.
     import queue
@@ -916,4 +922,5 @@ def most_common(self, n=None):
             values = values[:n]
         return values
 
-collections.MutableMapping.register(MultiSet)
+
+MutableMapping.register(MultiSet)