Changes in version 1.2 (Sep 2019)
====================================
	- ".QC$parameters" is renamed to ".QC$input_parameters"
	- checkConfigFileSections() function was added to checkConfigFile.R
	- Below variables are changed:
		* study$SNPs_invalid.path
		* study$SNPs_removed.path
		* study$SNPs_improbable_values.path
		* study$SNPs_duplicates.path
		* study$SNPs_mismatches.path
		* study$SNPs_monomorphic.path
		* study$SNPs_multi_allelic.path
		* study$SNPs_ambiguous.path
		* study$SNPs_significant.path
	- Add compatibility for older versions of R
	  * save.alternate.reference() ==> saveRDS(... , version = '2')
	  * save.rds.file() ==> saveRDS(... , version = '2')
