v5.9.0

Moderate update.
The read==> cell and read==>stru command have been enhanced to detect file formats.
Files ".cif", ".ins" & ".res", ".cssr" and ".txt" are interpreted as CIF, SHELX, RMCprofile and cmaker files respectively. The Files are still converted to a ".stru" file which is created on the disk, overwriting any old file of the same name.