Version 1.0.2.1

1. Add support of BitMapperBS to output MAPQ like Bowtie2.
2. Recalculate alignment with large or complex gaps.
3. For the '--mapstats' option, the output file name can be defined by users.
4. Add '--phred33', '--phred64', '--mp_max', '--mp_min', '--np', '--gap_open', and '--gap_extension' options.