Merge pull request #294 from wtsi-npg/devel

Changes ready for release 1.6.3
Merge branch 'devel'
Merge branch 'devel'
Merge pull request #49 from wtsi-npg/master

Merge changes up to release 1.6.5
Merge pull request #50 from iainrb/master

Merge changes up to release 1.6.5
Merge pull request #51 from wtsi-npg/devel

Merge port to external iRODS library and DNAP Utilities library
Enable processing of multiple Fluidigm resultsets for a given sample and SNP
Remove unnecessary import of uniq function
Add test of get_calls for singular resultset, add _get_observed_calls method to avoid repetition of code
Improved testing, made logic of call merge more clear
Merge pull request #301 from iainrb/fluidigm_merge_2

Fluidigm merge multiple resultsets