added MIT license for OrderedSet

theano/misc/ordered_set.py

@@ -15,6 +15,26 @@ def check_deterministic(iterable, known_deterministic):
 
 if MutableSet is not None:
     # From http://code.activestate.com/recipes/576694/
+    # Copyright (C) 2009 Raymond Hettinger
+
+    # Permission is hereby granted, free of charge, to any person obtaining a
+    # copy of this software and associated documentation files (the
+    # "Software"), to deal in the Software without restriction, including
+    # without limitation the rights to use, copy, modify, merge, publish,
+    # distribute, sublicense, and/or sell copies of the Software, and to permit
+    # persons to whom the Software is furnished to do so, subject to the
+    # following conditions:
+
+    # The above copyright notice and this permission notice shall be included
+    # in all copies or substantial portions of the Software.
+
+    # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+    # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+    # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     KEY, PREV, NEXT = range(3)
 
     class OrderedSet(MutableSet):