Sat, 07 Oct 2017 14:57:54 +0200 wenzelm merged
Sat, 07 Oct 2017 13:13:46 +0200 wenzelm clarified empty merge;
Sat, 07 Oct 2017 12:50:05 +0200 wenzelm permissive loaded_theories (amending 67dbf5cdc056): user errors are produced e.g. in Known.make;
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