created branch to replace create_struct with something else
testing new choose_psf structures. need to change branch
changed for psf testing
more testing
taken out unneeded psf_struct keywords
replaced create_struct PROCEDURE with create_struct FUNCTION
the function does not have to be compiled (every time) and is hence needed for HPC use
Took the chance to remove a bug in which a wrong 'closest' PSF can be selected.
Will test hoe much of an effect this had in the past.
finished testing new psf routines

updated version to 2.1.3
added date to galapagos version number
removed old, commented version from readin_psf_file.pro
added galapagos version into output catalogue

added reorder_tags.pro for this
removed stop from galapagos