Merge pull request #166 from wtsi-npg/master

pull request from wtsi master to devel (release 77.1)
remove redundant paths from npg_tracking::illumina::run::folder
Merge pull request #167 from mgcam/devel

remove redundant paths from npg_tracking::illumina::run::folder
if git version does not start with a digit, 0.0 is prepended; group path definitions together
POD
 public write accessors for bam_basecall and dif_files paths; analysis_path implementation and tests
Changes update
Merge pull request #169 from mgcam/devel

analysis_path accessor for top-level custon analysis directory
ensure module and package version starts with a digit - regexp implementation - thanks, David
Merge pull request #170 from mgcam/devel

better implementation for handling git versions starting with a char
Merge pull request #171 from wtsi-npg/devel

pull request from wtsi devel to master to create release 77.2