Scheming

I’ve finished the schema for nspectre configuration files.  It should be available in the next version of nspectre.  In doing so, I’ve made a few changes to the format.  Nothing major.  I’ve also written an XSL so that you can transform any existing configuration files from the old format to the new format.  Before it can be released, I need to add the schema to the configuration readers so that they can check the validity of configuration files.