Merge pull request #234 from icsharpcode/vs2019

Allow VS2019 installation

Author: GrahamTheCoder

Vsix/VisualStudioInteraction.cs

@@ -180,6 +180,7 @@ public class OutputWindow
 
             public static async Task<OutputWindow> CreateAsync()
             {
+                await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
                 return new OutputWindow(await CreateOutputPaneAsync());
             }
 

Vsix/source.extension.vsixmanifest

@@ -11,9 +11,9 @@
         <PreviewImage>Images\refactoringessentials-preview.png</PreviewImage>
     </Metadata>
     <Installation>
-        <InstallationTarget Version="[15.0,16.0)" Id="Microsoft.VisualStudio.Pro" />
-        <InstallationTarget Version="[15.0,16.0)" Id="Microsoft.VisualStudio.Community" />
-        <InstallationTarget Version="[15.0,16.0)" Id="Microsoft.VisualStudio.Enterprise" />
+        <InstallationTarget Version="[15.0,17.0)" Id="Microsoft.VisualStudio.Pro" />
+        <InstallationTarget Version="[15.0,17.0)" Id="Microsoft.VisualStudio.Community" />
+        <InstallationTarget Version="[15.0,17.0)" Id="Microsoft.VisualStudio.Enterprise" />
     </Installation>
     <Dependencies>
         <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.6,)" />
@@ -23,6 +23,6 @@
         <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%;PkgdefProjectOutputGroup|" />
     </Assets>
     <Prerequisites>
-        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0.26004.1,16.0)" DisplayName="Visual Studio core editor" />
+        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0.26004.1,)" DisplayName="Visual Studio core editor" />
     </Prerequisites>
 </PackageManifest>