some code simplifications
amatch/dl has parallelized int conversion
amatch/hamming has parallelized int conversion
memory management
amatch/jw has parallelized int conversion
amatch/lcs has parallelized int conversion
amatch/lv has parallelized int conversion
amatch/osa has parallelized int conversion
amatch/qgrams get parallelized int conversion
amatch/soundex has parallelized int conversion