You can see what was included in each .NET Native 2.1 ([Microsoft.NETCore.UniversalWindowsPlatform 6.1.x](https://www.nuget.org/packages/Microsoft.NETCore.UniversalWindowsPlatform)) release below.
When using Visual Studio these packages require Visual Studio 2017 Version 15.7 or later.
- Updates NETStandard.Library reference from version 2.0.2 to 2.0.3 to fix [UWP reference additional NetStandard dll after 15.7](https://developercommunity.visualstudio.com/content/problem/251571/uwp-reference-additional-netstandard-dll-after-157.html) and [After installing ..., a lot of warnings occur](https://github.com/dotnet/standard/issues/708)
- Adds support for [Optional packages with executable code](https://docs.microsoft.com/en-us/windows/uwp/packaging/optional-packages-with-executable-code)
- Fixes multiple errors caused by low memory issues when compiling .NET native apps [521825, 574099, 574102]
- Fixes Binding issues when using ReactiveUI [406415 and 406417]
- Fixes VS new project scenarios to include the correct Runtime Directives [464683]
- Fixes an issue handling unicode characters in .NET native targets [482808]
- Adds support for the Diagnostics.DisableMetadataStackTraceResolution AppContextSwitch [519008]
- Fixes crashes during compilation [525417]
- Fixes issue found when compiling complex generic types like those found in NPGSQL NuGet package [588948]