* Test end of chapter next() and prev()

* What's first, prev or next?

* Make sure all next changes have a prev change

* Add OSIS verse ref

* Add scrollmapper verse ref - 01001001 - scrollmapper - https://github.com/scrollmapper/bible_databases

* Remove functions?

* Add browser unit tests - Currently cv.spec.js makes testing in the browser difficult

* Add more abbreviations - including II Samuel, II Kings, etc - https://viz.bible/downloads

* Option to determine which differences to allow?

* Allow for other versification differences - e.g. Account for WEB verses in Romans