Create Avalonia.ReactiveUI package.

packages.cake

@@ -111,6 +111,7 @@ public class Packages
         var SplatVersion = packageVersions["Splat"].FirstOrDefault().Item1;
         var SpracheVersion = packageVersions["Sprache"].FirstOrDefault().Item1;
         var SystemReactiveVersion = packageVersions["System.Reactive"].FirstOrDefault().Item1;
+        var ReactiveUIVersion = packageVersions["reactiveui"].FirstOrDefault().Item1;
         var SystemValueTupleVersion = packageVersions["System.ValueTuple"].FirstOrDefault().Item1;
         SkiaSharpVersion = packageVersions["SkiaSharp"].FirstOrDefault().Item1;
 		SkiaSharpLinuxVersion = packageVersions["Avalonia.Skia.Linux.Natives"].FirstOrDefault().Item1;
@@ -124,6 +125,7 @@ public class Packages
         context.Information("Package: Splat, version: {0}", SplatVersion);
         context.Information("Package: Sprache, version: {0}", SpracheVersion);
         context.Information("Package: System.Reactive, version: {0}", SystemReactiveVersion);
+        context.Information("Package: reactiveui, version: {0}", ReactiveUIVersion);
         context.Information("Package: System.ValueTuple, version: {0}", SystemValueTupleVersion);
         context.Information("Package: SkiaSharp, version: {0}", SkiaSharpVersion);
         context.Information("Package: Avalonia.Skia.Linux.Natives, version: {0}", SkiaSharpLinuxVersion);
@@ -176,7 +178,6 @@ public class Packages
             new [] { "./src/", "Avalonia.Visuals", ".xml" },
             new [] { "./src/", "Avalonia.Styling", ".dll" },
             new [] { "./src/", "Avalonia.Styling", ".xml" },
-            new [] { "./src/", "Avalonia.ReactiveUI", ".dll" },
             new [] { "./src/", "Avalonia.Themes.Default", ".dll" },
             new [] { "./src/", "Avalonia.Themes.Default", ".xml" },
             new [] { "./src/Markup/", "Avalonia.Markup", ".dll" },
@@ -273,7 +274,25 @@ public class Packages
                 },
                 BasePath = context.Directory("./src/Avalonia.HtmlRenderer/bin/" + parameters.DirSuffix + "/netstandard1.3"),
                 OutputDirectory = parameters.NugetRoot
-            }
+            },
+            ///////////////////////////////////////////////////////////////////////////////
+            // Avalonia.ReactiveUI
+            ///////////////////////////////////////////////////////////////////////////////
+            new NuGetPackSettings()
+            {
+                Id = "Avalonia.ReactiveUI",
+                Dependencies = new []
+                {
+                    new NuSpecDependency() { Id = "Avalonia", Version = parameters.Version },
+                    new NuSpecDependency() { Id = "reactiveui", Version = ReactiveUIVersion }
+                },
+                Files = new []
+                {
+                    new NuSpecContent { Source = "Avalonia.ReactiveUI.dll", Target = "lib/netstandard1.3" }
+                },
+                BasePath = context.Directory("./src/Avalonia.ReactiveUI/bin/" + parameters.DirSuffix + "/netstandard1.3"),
+                OutputDirectory = parameters.NugetRoot
+            },
         };
 
         var nuspecNuGetSettingsMobile = new []