Sun, 29 Mar 2020 12:11:02 +0200 wenzelm tuned whitespace;
Sun, 29 Mar 2020 15:44:54 +0100 paulson more tidying up of old apply-proofs
Sat, 28 Mar 2020 21:54:31 +0100 wenzelm merged
Sat, 28 Mar 2020 19:58:19 +0100 wenzelm tuned;
Sat, 28 Mar 2020 19:53:01 +0100 wenzelm tuned;
Sat, 28 Mar 2020 19:33:14 +0100 wenzelm tuned;
Sat, 28 Mar 2020 19:11:59 +0100 wenzelm eliminated pointless flag (see also 6533ceee4cd7);
Sat, 28 Mar 2020 18:33:25 +0100 wenzelm tuned;
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