Wed, 21 Dec 2016 11:41:05 +0100 wenzelm clarified node_name: preserve original uri;
Wed, 21 Dec 2016 11:21:46 +0100 wenzelm clarified directories;
Fri, 23 Dec 2016 00:13:30 +0100 blanchet generalized generation of coinduction goal (towards nonuniform codatatypes)
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