diff main is working
switch to minitest
setting the timeout works
implement the edit cost methods
semantic cleanup
adding the efficiency wrapper
diff_levenshtein
diff pretty html
adding match_main
match threshold
match distance
patch_delete_threshold
wrap patches
patch_to_text
__patch_make_from_texts__
__patch_make_from_diffs__
__patch_make_from_text_and_diff__
patch_apply
patch to_string
remove rice stuff