Boris Feld <boris.feld@octobus.net> [Wed, 10 May 2017 12:26:33 +0200] rev 2336
obshistory: add a debugobshistory command to show obs history of a revs
Add the debugobshistory command that accept a revision range and display
the obsolescence containing each revision in the range.
For the moment, it only displays the predecessors.