v0.1.0

A few functional updates are included in this release:

main.py: former sc_split_main.py, new functions added to detect distinguishing alleles after samples are split, so that people can use them as a reference to get samples identified; command line arguments allowed
matrices.py: former sc_split_matrices.py, command line arguments allowed
genotype.py: former sc_split_vcf.py, command line arguments allowed
simulation.py: former sc_split_simu.py, command line arguments allowed
validate.py: newly added, users can use this to validate the genotypes based on the scSplit result compared to known vcf