added project-based AND
ADDED support for list-of-features file (parameter --loff); CHANGED csv-writing to support several files with different content; FIXED parsing arithmetic feature expressions broke script in some cases and stopped analysis for further files
ADDED scattering-and-tangling-values file (parameter --stf); FIXED error that caused wrong file count (thanks to Bo); ADDED some comments
merged changes from master branch: scattering-and-tangling values file; comments and fixes