Works good… has a few minor JS Issues

For me this plugin works just as described.
There are a few minor Javascript Issues (with opening / closing the tax exempt Field and reloading the prices), which I fixed myself.

I also added Translation + online check of VAT ID with https://vatid.eu/check/
(I think this is only relevant for Europe…)

Here’s my fork, if anybody is interested:
https://github.com/seangreen/woocommerce-super-simple-tax-exempt-plugin