Error getting reference to Jonah

[OvenYee]

Hey! Thanks for your work on this project. There's a slight issue when getting references to Jonah if it's written as "jon". I didn't look too closely, but I think it's a problem with the regex. This is obviously a super niche error, but I thought I'd mention it anyways.

Input:

import pythonbible as bible

bible.get_references("micah-jon") 
# or bible.get_references("jon-jon")

Output:

ValueError: invalid literal for int() with base 10: 'n'

Input:

bible.get_references("obadiah-jon")
bible.get_references("jon-john")

Output:

[NormalizedReference(book=<Book.OBADIAH: 31>, start_chapter=None, start_verse=None, end_chapter=None, end_verse=None, end_book=<Book.JONAH: 32>)]
[NormalizedReference(book=<Book.JONAH: 32>, start_chapter=None, start_verse=None, end_chapter=None, end_verse=None, end_book=<Book.JOHN: 43>)]

Here's a quick fix, but there might be a better one.
Old:

_JOHN_REGULAR_EXPRESSION = r"(John|Joh\.*|Jhn\.*|Jo\.*(?!shua|b|nah|el)|Jn\.*)"

New:

_JOHN_REGULAR_EXPRESSION = r"(John|Joh\.*|Jhn\.*|Jo\.*(?!shua|b|nah|el|n)|Jn\.*)"