Expand the range in the vsix manifest (#797)

Author: phil-allen-msft

src/LibraryManager.Vsix/source.extension.vsixmanifest

@@ -12,16 +12,16 @@
         <Tags>library, package, client-side, install</Tags>
     </Metadata>
     <Installation AllUsers="true">
-        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0,18.0)">
+        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0,19.0)">
           <ProductArchitecture>amd64</ProductArchitecture>
         </InstallationTarget>
     </Installation>
     <Dependencies>
         <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.5,)" />
     </Dependencies>
     <Prerequisites>
-        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[17.0,18.0)" DisplayName="Visual Studio core editor" />
-        <Prerequisite Id="Microsoft.VisualStudio.ComponentGroup.WebToolsExtensions" Version="[17.0,18.0)" DisplayName="ASP.NET and web development" />
+        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[17.0,19.0)" DisplayName="Visual Studio core editor" />
+        <Prerequisite Id="Microsoft.VisualStudio.ComponentGroup.WebToolsExtensions" Version="[17.0,19.0)" DisplayName="ASP.NET and web development" />
     </Prerequisites>
     <Assets>
         <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%;PkgdefProjectOutputGroup|" />