Preliminary adaptation of Echidna data reduction to Wombat
First working version of basic Wombat data reduction.
Removed bug in add_metadata bypass code.
Added tests and fixed CIF metadata propagation in data reduction routines
Fix for unicode strings in CIF files and metadata propagation in
background subtraction.
Merge branch 'master' into braggmaster
Merge work done in my tree back to the main master tree