Use MutableSequence and MutableMapping from collections.abc. (Fixes: #2)

typedcols.py

@@ -61,7 +61,7 @@ class TypedDictMetaclass(abc.ABCMeta):
         dictify_typedef(cls.typedef)
 
 
-class TypedDict(collections.MutableMapping):
+class TypedDict(collections.abc.MutableMapping):
     """ Dictionary type abstract class, which supports checking of inserted
         types, based on simple type definition.
 
@@ -222,7 +222,7 @@ class TypedDict(collections.MutableMapping):
 TypedDict = TypedDictMetaclass("TypedDict", (TypedDict,), {})
 
 
-class TypedList(collections.MutableSequence):
+class TypedList(collections.abc.MutableSequence):
     """ List type abstract class, which supports checking of inserted items
         type.