Wed, 25 Sep 2019 17:22:57 +0200 nipkow replaced new type ('a,'b) tree by old type ('a*'b) tree.
Wed, 25 Sep 2019 14:31:00 +0200 wenzelm more Phabricator configuration;
Tue, 24 Sep 2019 17:36:14 +0200 nipkow merged
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