Squashed 'lib/PTButils/' changes from 71ed105..33f9e0d
Squashed 'lib/PTButils/' changes from 71ed105..33f9e0d

33f9e0d added the levenshtein edit distance function

git-subtree-dir: lib/PTButils
git-subtree-split: 33f9e0d36354b2b8704ea1a56b6b7ffe5b63bd08

wjhopper/FaM_LB4L2_experiment