Update unicodeWords along with lodash

[toastal]

When I originally wrote this I just ported the words code from lodash as it was battle-tested. Given it's had some updates/bugfixes, this should too to follow in step. I may have a look this weekend.

Also one of those code blocks got changed from purescript to pures. I spell it purse a lot on accident 😂

[thomashoneyman]

Whoops — I was probably trying to type ‘purs’ 😬