Added netstandard2 as an additional target

Author: stevenlivz

XMPPEngineer.userprefs

@@ -0,0 +1,23 @@
+<Properties StartupConfiguration="{5FB57B73-A453-4489-8DBA-ED489832D81E}|Default">
+  <MonoDevelop.Ide.Workbench>
+    <Pads>
+      <Pad Id="ProjectPad">
+        <State name="__root__">
+          <Node name="XMPPEngineer" expanded="True" selected="True">
+            <Node name="XMPPEngineer" expanded="True" />
+            <Node name="XMPPEngineerTest" expanded="True">
+              <Node name="Dependencies" expanded="True" />
+            </Node>
+          </Node>
+        </State>
+      </Pad>
+    </Pads>
+  </MonoDevelop.Ide.Workbench>
+  <MonoDevelop.Ide.Workspace ActiveConfiguration="Debug" />
+  <MonoDevelop.Ide.DebuggingService.Breakpoints>
+    <BreakpointStore />
+  </MonoDevelop.Ide.DebuggingService.Breakpoints>
+  <MonoDevelop.Ide.ItemProperties.XMPPEngineerTest PreferredExecutionTarget="MonoDevelop.Default" />
+  <MonoDevelop.Ide.DebuggingService.PinnedWatches />
+  <MultiItemStartupConfigurations />
+</Properties>