Merge branch '2019.3/marc' into mikesbranch

# Conflicts:
#	Assets/scenes/Artist tools demo.unity.meta

Packages/manifest.json

     "com.unity.build-report-inspector": "0.1.2-preview",
     "com.unity.burst": "1.2.3",
     "com.unity.cinemachine": "2.5.0",
+    "com.unity.formats.fbx": "3.0.1-preview.2",
+    "com.unity.probuilder": "4.2.3",
     "com.unity.recorder": "2.1.0-preview.1",
     "com.unity.render-pipelines.universal": "7.1.8",
     "com.unity.terrain-tools": "2.0.2-preview",