Phaser v4.0.0 Beta 1

This is the first beta release of Phaser v4.0.0. This build includes the brand new Phaser Beam renderer, that powers all of the WebGL rendering internally. We will be publishing more details about this in the coming days, but for now, you can drop in this build as a direct v3.80+ replacement and see how your game runs! Check out the README for more internal changes.