Sat, 17 Aug 2019 10:38:02 +0200 wenzelm clarified signature;
Fri, 16 Aug 2019 21:50:57 +0200 wenzelm merged
Fri, 16 Aug 2019 21:38:42 +0200 wenzelm maintain thm_name vs. derivation_id for global facts;
Fri, 16 Aug 2019 21:02:18 +0200 wenzelm clarified identity of PThm nodes: do not reuse old id after renaming -- enforce uniqueness of substructures;
Fri, 16 Aug 2019 14:01:51 +0200 wenzelm clarified signature;
Fri, 16 Aug 2019 15:48:08 +0100 paulson Fixed brace matching (plus some whitespace cleanup)
Fri, 16 Aug 2019 12:53:47 +0100 paulson merged
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