Significant speed up for chemanalysis tools
With the first call of analyse_chemistry the routine generates a chemanalysis.fits (if it does not yet exists), and read all the data from this file. This is much faster (factor 100 or so) then always parsing through the .out file.
Also in the future ProDiMo can also write the data in .fits format (first implementation already exists), so then the conversion step goes away. Also the fits file is about a factor 6 smaller then the corresponding chemanalysis.out.
It might needs more memory though