Fixes https://github.com/sillsdev/serval/issues/449

[Enkidu93]

I'm not sure that this is the cleanest solution, but it does resolve the issue. Please critique :)

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This change is 

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.66%. Comparing base (e97df8c) to head (6f34aa0).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #232 +/- ## ======================================= Coverage 69.66% 69.66% ======================================= Files 377 377 Lines 31374 31377 +3 Branches 4391 4391 ======================================= + Hits 21856 21860 +4 Misses 8498 8498 + Partials 1020 1019 -1 ```

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[johnml1135]

tests/SIL.Machine.Tests/Corpora/UsfmMemoryTextTests.cs line 117 at r1 (raw file):

    public void GetRows_OptBreak()
    {
        // a verse paragraph that begins with a non-verse segment followed by a verse segment

Non verse followed by verse? Isn't it the other way around?

[Enkidu93]

That works, @ddaspit . I saw that function but dismissed it because of the naming.

[johnml1135]

Aside from outbreaks not being documented as part of USFM, it looks great.

[johnml1135]