nroi and nflies_close were required for loaded in jab files, causing the code to crash on old projects for me.
I added checks to make sure that the fields existed before looking at them.
I also modified the reading from the advanced parameters tables to convert things to doubles if they should be doubles.
Modified saving of JAB files to save as structs instead of Macguffins.
A few more tweaks to get the nroi stuff to work with existing jab files.
Merge branch 'master' of github.com:kristinbranson/JAABA