Hello!
I'm logged in on github, but for some reason can't access "issues" tab, therefore I'm writing it here.
Some private members became public, but still prefixed with underscore, for example - https://github.com/BabylonJS/Babylon.js/blob/master/src/babylon.engine.ts#L296. It's not that important, I know, but I'm cringing seeing this, lol. I belive, it's good to strictly follow code conventions.
Thank you for attention.