Merge pull request #1 from srl147/devel

first proper version of norm_fit
Merge pull request #2 from srl147/devel

Devel
Merge branch 'devel' of https://github.com/wtsi-npg/npg_qc into devel
added SpuriousPeaks function
Merge pull request #9 from ia1/devel

from ia1 devel