Merge pull request #1 from iainrb/devel

Added Makefile
Merge pull request #3 from iainrb/devel

Merge changes for release 0.1.2
Merge pull request #4 from iainrb/devel

Merge changes for release 0.2.0
Merge pull request #5 from iainrb/devel

Make .bed merge non-verbose by default
New class and command-line script to find heterozygosity separately for high/low MAF
Separate functions for computation and text/json output
Use new runJson method
Add test for MafHetFinder
Add option for text output on command line, and update README
Added het_by_maf.py
Merge pull request #6 from iainrb/devel

Added MAF/het calculation for release 0.3.0
Add rounding to .json output
Bugfix; correct index for reading individual name from .fam file
Change permissions to make executable
Catch ZeroDivisionError, if no calls found for a given SNP
Merge pull request #7 from iainrb/devel

Merge changes for release 0.3.1
Move validation into PlinkValidator class; add PlinkToolsError class
Add no-validate option and validate argument to merge
Merge pull request #8 from iainrb/devel

Changes for release 0.3.2
Merge pull request #9 from wtsi-npg/devel

Changes for release 0.3.2