[jsword-devel] VerseKey change

[DM Smith]

The mapping code casts a verse or a verse range from one versification to another in a few spots.

Typically this is by converting the VerseKey to an OSIS ref and then parsing it into another versification. This incurs a lot of overhead as the conversion to a string and then parsing it back to Verse, VerseRange or Passage is very expensive.

I've added to the VerseKey interface:
VerseKey reversify(Versification newVersification);

This does a blind cast from one v11n to another. While it is dangerous, it provides the performance that is appropriate.

I'm working on incorporating this into the mapping code.

In Him,
	DM

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