Changes

* Version 4.13.9 released (07/14/2016)

* Version 4.13.9 released (07/14/2016)

** The source code has been refined in this version to prepare for incoming new meta-analysis method.

** The source code has been optimized to prepare for incoming new meta-analysis method in next version.

** Reduced running time when reading over 10,000s individual genotype from vcf

** Reduced running time when reading over 10,000s individual genotype from vcf

** '''Fixed seg fault in raremetalworker for calculating SNP HWE p value when sample size > 40k'''

** '''Fixed seg fault in raremetalworker for calculating SNP HWE p value when sample size > 40k'''