use built in uuid instead

[jimmywarting]

I confirm that this contribution is made under the terms of the license found in the root directory of this repository's source tree and that I have the authority necessary to make this contribution on behalf of its copyright owner.

use built in uuid instead of depending on some dependency to do it

[will-stone]

Would it better to use some form of getRandomValues() so that it works in more browsers?

getRandomValues

randomUUID