htag, a gui toolkit to build gui toolikts

I've never really talk about gtag here. It was just a Proof Of Concept over guy, which worked "well".

But now, it's the end of gtag ... and the birth of htag.

The concept has been pushed to the extreme ... and it works really well (for me ;-).

It's now completly guy untied. But, usable in a guy instance ... and usable in others shelve, like pywebview, a cefpython3 or a simple browser.

It's a lot better like that