Fri, 27 Apr 2018 12:43:05 +0100 paulson merged
Fri, 27 Apr 2018 12:38:30 +0100 paulson minor typeclass generalisations and junk removal
Thu, 26 Apr 2018 22:47:22 +0100 paulson merged
Thu, 26 Apr 2018 22:47:04 +0100 paulson more messy proofs
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