Merge pull request #200 from keithj/devel

Pre-release fixes to user-visible scripts
Incremented version number
Merge pull request #202 from iainrb/devel

Incremented version number to 1.2.2
Merge pull request #204 from keithj/devel

Bugfix to ready_pipe.pl for the case where
Merge pull request #206 from keithj/devel

Refactored the way WTSI::NPG::Genotyping::Database::Pipeline handles its dbfile attribute