One more gintro example: [https://github.com/StefanSalewski/nim-chess4](https://github.com/StefanSalewski/nim-chess4)
Installation is much easier also now. A really one command install does not work yet due to still unfixed nimble bug 280, but install takes only a few commands. Binary size has grown from 108k to 132k due to high level GUI API. Engine is still identical to version 3. I also added a cairo drawing and animation example to the gintro tutorial, see bottom of [https://github.com/StefanSalewski/gintro](https://github.com/StefanSalewski/gintro)
