Merge pull request #94 from amrishparmar/patch-1

Fix deprecated use of `collections` module

Author: derek73

nameparser/config/__init__.py

@@ -31,6 +31,11 @@
 from __future__ import unicode_literals
 from collections.abc import Set
 import sys
+try:
+    # Python 3.3+
+    from collections.abc import Set
+except ImportError:
+    from collections import Set
 
 from nameparser.util import binary_type
 from nameparser.util import lc
@@ -48,7 +53,7 @@
 class SetManager(Set):
     '''
     Easily add and remove config variables per module or instance. Subclass of
-    ``collections.Set``.
+    ``collections.abc.Set``.
     
     Only special functionality beyond that provided by set() is
     to normalize constants for comparison (lower case, no periods)