2019.3 Update 2 (Unity-Technologies#1)

* Updated project to 2019.3.2f1 / 7.2.1

* Added the Magic Book sample

* Added Script Control for AA/Cursor + Optimized Overdraw

* Fix for Magic Book pages

Enabled read/write on the pages (weren't showing up in standalone before), fixed magic book entry in the load menu, cleaned up other mesh import settings, restored the floating rock.

* Re-positioned FPS Counter

* Updated README

Updating to 2019.3 / 7.2.0 (Unity-Technologies#14)

* Updated to 7.2.0 + Fixed Assets

* Rebuilt VFX

* Fixed GrassWind Ambient, Fixed Chomper SSS Profile

* Rebuilt VFX, Fixed Voxelized Terrain UI labels disappearing in 1440p

* Updated Changelog

Merge pull request Unity-Technologies#11 from Unity-Technologies/stag…

…ing/2019.3

Upgrade to 2019.3

Upgraded to 5.8.2-preview + PinScreen Sample

Update README.md

Update README.md