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-rw-r--r--third_party/digraph.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/third_party/digraph.py b/third_party/digraph.py
index 4fafcbd46..31b51c9e5 100644
--- a/third_party/digraph.py
+++ b/third_party/digraph.py
@@ -1,5 +1,12 @@
# Copyright (c) 2013 Mark Dickinson
#
+# 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.
#