Wed, 31 Jul 2013 16:50:41 +0200 traytel more robust tactic
Wed, 31 Jul 2013 15:24:07 +0200 wenzelm merged
Wed, 31 Jul 2013 13:00:42 +0200 wenzelm clarified priority of "skipped" proofs, which might take long but do not produce relevant information (potential conflict of quick interactive feedback vs. performance in batch mode);
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