Refine categories within app

[elespdn]

The code now assigns one category to each <app> containing variant <rdg>s.

It would be better, when needed, to refine the categorisation and organize the readings in <rdgGrp> (with @type). Something like:

<app ana="lexical">
    <rdg>yellow</rdg>
    <rdgGrp type="orthographic">
        <rdg>gray</rdg>
        <rdg>grey</rdg>
    </rdgGrp>
</app>

[Jean-Baptiste-Camps]

I would advise very much againt rdgGrp and very much in favour of imbricated apps, like

<app ana="lexical">
    <rdg>yellow</rdg>
    <rdg>
      <app type="orthographic">
        <rdg>gray</rdg>
        <rdg>grey</rdg>
      </app>
    </rdg>
</app>

This is often more precise that what can be done with, rdgGrp, in particular in cases like

<app ana="lexical">
    <rdg>yellow</rdg>
    <rdg>dark
      <app type="orthographic">
        <rdg>gray</rdg>
        <rdg>grey</rdg>
      </app>
    </rdg>
</app>