Sun, 14 May 2017 15:34:20 +0200 wenzelm clarified notion of known files (before actual commit);
Sun, 14 May 2017 15:16:38 +0200 wenzelm explore older history;
Sun, 14 May 2017 15:13:56 +0200 wenzelm explicit history_base;
Sun, 14 May 2017 15:07:13 +0200 wenzelm explore repository structure, with minimal assumptions about "hg log" output;
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