Set version to stable 2.3.0

Author: xabre

.build/Plugin.Badge.nuspec

@@ -1,7 +1,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
   <metadata>
     <id>Plugin.Badge</id>
-    <version>2.3.0-pre.2</version>
+    <version>2.3.0</version>
     <title>Tab Badge for Xamarin.Forms</title>
     <authors>Adrian Seceleanu</authors>
     <owners>Adrian Seceleanu</owners>

Source/Plugin.Badge.Droid/BadgedTabbedPageRenderer.cs

@@ -18,7 +18,7 @@ namespace Plugin.Badge.Droid
 {
     public class BadgedTabbedPageRenderer : TabbedPageRenderer
     {
-        private const int DeleayBeforeTabAdded = 10;
+        private const int DelayBeforeTabAdded = 50;
         protected readonly Dictionary<Element, BadgeView> BadgeViews = new Dictionary<Element, BadgeView>();
         private TabLayout _topTabLayout;
         private LinearLayout _topTabStrip;
@@ -134,7 +134,7 @@ private void OnTabRemoved(object sender, ElementEventArgs e)
 
         private async void OnTabAdded(object sender, ElementEventArgs e)
         {
-            await Task.Delay(DeleayBeforeTabAdded);
+            await Task.Delay(DelayBeforeTabAdded);
 
             if (!(e.Element is Page page))
                 return;

Source/Sample/Plugin.Badge.Sample/ViewModels/Tab1ViewModel.cs

@@ -89,7 +89,7 @@ public class Tab1ViewModel : INotifyPropertyChanged
         private int _fontIndex;
         private int _positionIndex;
 
-        public string Count => _count <= 0 ? string.Empty : _count.ToString();
+        public string Count => _count <= 0 ? null : _count.ToString();
 
         public int CountValue
         {