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Show overview of all TopGit-tracked topic branches and their
up-to-date status ('0' marks that it introduces no own changes,
+ 'l'/'r' marks that it is local-only or has remote mate,
+ 'L'/'R' marks that it is ahead/out-of-date wrt. its remote mate,
'D' marks that it is out-of-date wrt. its dependencies,
'!' marks that it has missing dependencies (even recursively),
'B' marks that it is out-of-date wrt. its base).