Browser version of Tilengine

[megamarc]

Hi!

Sorry for the long delay.

In my development branch I use VSYNC for window creation and get correct behavior in both Firefox and Edge. I haven' tried no vsync, as the variable monitor rate feature was added in main branch and I haven't yet merged with html5 branch.

You can check my samples running in-browser here:

https://www.tilengine.org/emcc/platformer.html

https://www.tilengine.org/emcc/mode7.html

https://www.tilengine.org/emcc/barrel.html

https://www.tilengine.org/emcc/colorcycle.html

https://www.tilengine.org/emcc/shadow.html