richarddurbin/pbwt — pull request #12 by sm15 (2014-04-29 13:30:13+00:00)
Title: readVcfGT: split non-biallelic records rather then skipping

- Split non-biallelic records into biallelic records, filling in REF for "unseen" alleles

```
T	A,C	0|0	0|1	1|0	1|1	1|2	0|2	2|0	2|1	2|2
```

becomes

```
T	A	0|0	0|1	1|0	1|1	1|0	0|0	0|0	0|1	0|0
T	C	0|0	0|0	0|0	0|0	0|1	0|1	1|0	1|0	1|1
```

- add test for reading and writing a VCF
- treat haploid genotypes in the non-PAR region as diploid A/A
- convert tabs to spaces