Update Reference Handling

[applehat]

The current Reference parser was written while I was mentally drained and its a mess.

There are much better implementations in other languages that inspiration can be drawn from.

A few quick examples I found that I'm documenting here for later reference:

• https://github.com/TechWilk/bible-verse-parser
• https://github.com/openbibleinfo/Bible-Passage-Reference-Parser
• https://github.com/eliranwong/bible-verse-parser