Merge pull request #63 from wtsi-npg/devel

1.12 release
Merge pull request #66 from wtsi-npg/devel

Release 1.13
Merge pull request #69 from dkj/devel

Cope with HiSeqX runfolders
Merge pull request #70 from wtsi-npg/devel

pull request from wtsi devel to master to create release 1.15