Authors: Update Contributors list

[admshao]

This was generated using this script
git shortlog -ns jp9000/master | awk '{$1=""; print}' | sed -e 's/^.//'
And manually editing the AUTHORS file later.

Should we also add email address?

This should ideally be re-run and updated prior to the release

[Xaymar]

I'm in this list twice, once with my full name and once without my full name and just my alias. I think you should group these by email, which hopefully reduces duplicates.

[pkviet]

I'm in this list twice, once with my full name and once without my full name and just my alias. I think you should group these by email, which hopefully reduces duplicates.

A mailmap would be a solution.
https://git-scm.com/docs/git-shortlog

edit: there's already one; it just need to be updated. I'll see what I can do @admshao

[dodgepong]

I would prefer this not be listed with my email address.

[admshao]

No emails and removed duplicates.