Update LanguageServerProtocol to 2.1.0

Author: matarillo

server/SampleServer/App.cs

@@ -15,7 +15,7 @@ namespace SampleServer
     public class App : ServiceConnection
     {
         private Uri _workerSpaceRoot;
-        private int _maxNumberOfProblems;
+        private int _maxNumberOfProblems = 1000;
         private TextDocumentManager _documents;
 
         public App(Stream input, Stream output)
@@ -67,7 +67,8 @@ protected override void DidCloseTextDocument(DidCloseTextDocumentParams @params)
 
         protected override void DidChangeConfiguration(DidChangeConfigurationParams @params)
         {
-            _maxNumberOfProblems = @params?.settings?.languageServerExample?.maxNumberOfProblems ?? 100;
+            _maxNumberOfProblems = @params?.settings?.languageServerExample?.maxNumberOfProblems ?? _maxNumberOfProblems;
+            Logger.Instance.Log($"maxNumberOfProblems is set to {_maxNumberOfProblems}.");
             foreach (var document in _documents.All)
             {
                 ValidateTextDocument(document);

server/SampleServer/SampleServer.csproj

@@ -38,7 +38,6 @@
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
@@ -54,7 +53,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="LanguageServerProtocol">
-      <Version>2.0.3</Version>
+      <Version>2.1.0</Version>
     </PackageReference>
     <PackageReference Include="System.Console">
       <Version>4.3.0</Version>