stringdist/dl now has parallel integer conversion
stringdist/hamming has parallelized int conversion
stringdist/jw has parallelized integer conversion. bugfix in hamming distance
stringdist/lcs has parallelized integer conversion
stringdist/lv has parallelized int conversion
stringdist/osa has parallelized int conversion
stringdist/qgram has parallelized int conversion
few bugs. stringdist/soundex has paralellized int conversion
removed spurious call to char2int