chore: +"bitfield" to dict; tweak Proper nouns

[hippietrail]

Issues

N/A

Description

"Bitfield" is a common enough word in computing. The single-word spelling seems to be the preferred one, so it's the one I've chosen.
There is no entry for it in any of the major online dictionaries: American Heritage, Cambridge, Collins, Longman, OED, Oxford, or Webster's - so I've put it in the tech section.
(I don't count Wiktionary, Dictionary.com, or especially Urban Dictionary as major, though they're certainly useful.)

I renamed the description field of a few Proper noun sections that were about states of a country but included cities as well.
And I added a new section with the names of the provinces and their capitals of Laos, for the ones that are multi-word.

Leaving this as a draft for now on the expectation that I'm going to find more words to add in the next couple of days.

How Has This Been Tested?

Making sure all tests still pass and snapshots are up-to-date.

Checklist

• I have performed a self-review of my own code
• I have added tests to cover my changes