v0.2.1

 [BUG FIXES]
 - Use 'x_contributors' instead of dumpster-diving in other peoples'
   modules. (RT95626, reported by Slaven Rezic, lots of help from Karen
   Etheridge).

 [STATISTICS]
 - code churn: 3 files changed, 42 insertions(+), 28 deletions(-)
Deal with no contributors at all
Call to 'prune_file' was wrong
changelog
Build results of 984a659 (on master)