randomness in selecting mutants

[jvoigtlaender]

Here:

prolog-test-server/src/DropClauseMutation.hs

Line 18 in a1b8f29

dropClauseMutation (Indiviual n) s = take n <$> dropClauseMutation Summary s

and here:

prolog-test-server/src/ToAnonymousVarMutation.hs

Line 19 in a1b8f29

Right cs -> Right $ take 1000 $ map (unlines . map (fixupShow . show)) (tail $ mapM mutate cs)

simply the first so-and-so many of all mutants are taken. Maybe the list should be shuffled beforehand?