Merge pull request #3 from wtsi-npg/devel

updated
Changed insert_size.norm_fit_confidence from integer to float
Merge pull request #39 from jenniferliddle/devel

Changed insert_size.norm_fit_confidence from integer to float
Updated schema
Update schema
Merge pull request #40 from jenniferliddle/devel

updated schema
Merge pull request #41 from wtsi-npg/devel

updated schema