Thu, 31 Aug 2017 19:06:14 +0200 wenzelm clarified signature: provide all_known information uniformly (it is subject to Sessions.T selection);
Thu, 31 Aug 2017 17:31:56 +0200 wenzelm reverted 6acb28e5ba41: permissiveness of 1e5ae735e026 should be sufficient;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 tip