Unity 2019.3.4

What's new in this version:

Fixes:
- 2D: Fixed Unity crashes when selecting SpriteRenderer with tiling enabled in SceneView
- Asset Import: Fixed issue with uninitialized color variable in SketchupImporter
- Asset Import: Fixed typos in error messages of MaterialDescriptionPostProcessors
- Asset Import: Fixed wrong UV settings in Materials imported from .dae fileswith MaterialImportMode = ImportViaMaterialDescription
- Asset Import: NullReferenceException is thrown when inspecting a .FBX file with multiple clips and opening Animation tab
- Editor: Fixed missing MonoBleedingEdge/etc directory in Zip Installer
- GI: Fixed an issue with incorrect culling of spot lights against the light grid when using the CPU lightmapper
- Graphics: Added the option to limit the amount of visible lights when doing culling with Scriptable Render Pipeline
- Graphics: Fixed draw setup failure not properly detected during batched rendering
- Graphics: Fixed possibility to abort restart of editor after changing graphics API, which could put editor in a bad state
- Graphics: Fixed Vertex and Fragment shader interfaces mismatch on some platforms
- IL2CPP: Allowed the GetAllNetworkInterfaces method to work on UWP
- IL2CPP: Corrected secure string allocation on Windows platforms
- IL2CPP: Corrected the build for unsafe code using the cpobj and cpblk IL instructions with IntPtr arguments
- Package Manager: Fixed an issue where files or directories ending with .core were ignored when making a package tarball through the /services/packages/pack route
- Package Manager: Fixed an issue where some registries were mistakenly not considered valid registries
- Package Manager: Fixed an issue where Unity could not connect to the UnityPackageManager process due to misconfigured proxy settings
- Package Manager: Fixed an issue where Unauthorized errors from npm registries were treated as generic errors
- Package Manager: Fixed Linux binary not running on CentOS distribution
- Package Manager: Fixed scoped registry packages not listed when the registry backend did not provide the content-type header in the response
- Package Manager: Improved the error message when a search for a package name results in no compatible version found by reporting the package name as well
- Package Manager: Resolved errors in Adaptive Performance Samsung Android package when using .net 3.5
- Package Manager: Resolved warnings in Adaptive Performance Package when using .net 3.5
- Package Manager: Shortened the name of folders storing Git packages in the project cache in order to reduce the likelihood of reaching the maximum path limit on Windows
- Prefabs: Editor functionality completely broken, due to prefab containing broken overrides
- This PR removes the broken overrides, to bring editor into a useful state
- Prefabs: Fixed AssetDatabase.SaveAssets and AssetDatabase.ImportAsset would breaking references to the imported/modified prefab
- Scripting: SerializedProperty::HasVisibleChildren now returns false in the case of a SerializedReference if the property is hidden in inspector. This is now consistent with SerializedProperty::NextVisible
- Scripting Upgrade: Fixed ApiUpdater not removing using statements in some scenarios
- Scripting Upgrade: Fixed ApiUpdater not respecting InternalsVisibleToAttribute
- Terrain: Fixed crash that occurs with async updates to Tree count
- Video: Last frames of video are repeated when played using Video Player Component
- Windows: Fixed primary display leaving fullscreen when 2nd display activated
- XR: Fixed mirror view UI is missing for 19.3 XRSDK
- XR: Fixed Visual Effect Graph not rendering with instanced terrain and XR single-pass instancing
- XR: Recentered the Headset when Oculus' Reset View is called from the OS
- XR: Support conditionally rendering stereo frames on XR Display using the shim layer

API Changes:
- Graphics: Added: Added the option to limit the amount of visible lights when doing culling with Scriptable Render Pipeline
- Package Manager: Removed: Removed support for the deprecated exclude project dependency keyword

Changes:
- Package Manager: An error is now reported when there are multiple embedded packages with the same name
- Package Manager: Changed path and file format of global configuration file. The configuration file format is now [TOML](https://github.com/toml-lang/toml). The old global configuration file path is deprecated. New global configuration should be set in this new file.

Improvements:
- Asset Import: Added AssetDatabase.DisallowAutoRefresh and AssetDatabase.AllowAutoRefresh to the C# API. (1173031)
- HLSLcc: Added an option that attempts to preserve varying locations
- Package Manager: Update verified packages to 1.1.0:
- com.unity.adaptiveperformance
- com.unity.adaptiveperformance.samsung.android

Features:
- Package Manager: Added support for Git package to be located in a repository sub-folder
- Package Manager: Added support for scoped registries authentication
- Package Manager: Introduced two new environment variables to override user and global configuration files path. UPM_GLOBAL_CONFIG_FILE overrides the default path of the global configuration file. UPM_USER_CONFIG_FILE overrides the default path of the user configuration file.