Reacting to SignalR changes

src/Microsoft.AspNetCore.SignalR.SqlServer/ObservableDbOperation.cs

@@ -365,7 +365,7 @@ namespace Microsoft.AspNetCore.SignalR.SqlServer
         [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "I need to")]
         protected virtual bool StartSqlDependencyListener()
         {
-#if NETSTANDARD1_3
+#if NETSTANDARD1_5
             return false;
 #else
             lock (_stopLocker)

src/Microsoft.AspNetCore.SignalR.SqlServer/project.json

@@ -16,13 +16,13 @@
         "System.Data": ""
       }
     },
-    "netstandard1.3": {
+    "netstandard1.5": {
       "dependencies": {
         "System.Data.SqlClient": "4.0.0-*",
         "System.Runtime": "4.1.0-*"
       },
       "imports": [
-        "dotnet5.4",
+        "dotnet5.6",
         "portable-net451+win8"
       ]
     }