The Scripture reference whose chapter is to be adjusted.
The number of chapters to offset the current chapter by. Positive values move forward, negative values move backward.
A new Scripture reference with the adjusted chapter. The verse number is reset to 1. The
chapter number is clamped to stay within valid bounds for the book. For books-present-aware
stepping that rolls across chapter/book boundaries (Paratext 9 style), see the get*Ref
navigation functions in platform-bible-react/experimental.
Adjusts the chapter of a Scripture reference by a specified offset.