Changed from installing into the xpsec-models-cxc namespace package - so accessing the routines via xspec_models_cxc.utils - to its own pacgage: xspec_models_cxc_templates. This is a bit annoying, but we want xspec_models_cxc to be useable, which the previous approach prevented.
Initial version. This uses code from xspec-models-cxc 0.0.31.