[split] Percentage of word types that occur more than once

[Emma May Smith]

The size of the vocabulary and the number of one token words might be misaligned with the apparent length of the text. The language of each scribe/section varies so that we're effectively looking at multiple texts with only a fraction of the words from the manuscript as a whole. Given that one token word types will be more common in shorter texts, we need to compare each section with a text of equal length.