Tue, 16 Jul 2019 22:18:18 +0100 Chengsong added the cloudfare eg.
Mon, 15 Jul 2019 10:46:50 +0100 Christian Urban just a merge - no changes
Sat, 13 Jul 2019 22:56:31 +0100 Chengsong proof details
(0) -30 -10 -3 +3 +10 +30 tip