logilab-devtools #293629 [hgext] Add a "backlog" command [validation pending]

[hgext] Add a "backlog" command

prioritynormal
typetask
done in0.25.0
load1.000
load left0.000
closed by#a2afebbfb25e [hgext] Add a "backlog" command (closes #293629)
patch[hgext] Add a "backlog" command (closes #293629) [applied]