management of re-edited texts

[jcowey]

How do we best manage re-edited texts? State the github file that is the "reference" file (i.e. the file where the text has lived so far). In the normal papyri.info world this file would become a "dummy header" file with reprint-in information. The new file would be a pylon;1;2 (or whatever) with acknowledgement in the header that it is a reprint-from the other file.