The source project of this merge request has been removed.
ENH: Abinit PAW/XML support
ENH: allow Abinit calculator to find and use PAW/XML psp, using pps="pawxml" argument to Abinit. Also search for suitable fallback psp when the desired database (e.g. FHI or PAW) is not found for given element, so that the calculation can make best use of all installed psp.