v. 0.8.0

• Added support for reading SHAPEIT haps/sample files (read.haps)

• Added support for reading Oxford formatted files (read.oxford).

• imputation_accuracy: Standardizing with p is now scaling with the
  squareroot of the variance of allele frequency. Before this, it was the
  variance.

• Function renaming:

  • cbind_SNPs --> cbind_snp_files
  • rbind_SNPs --> rbind_snp_files
  • mask_SNPs --> mask_snp_file