support for .NET framework 3.5

Still have bugs

Net35/HandyControl_Net35/Themes/Styles/Base/LoadingCircleBaseStyle.xaml

@@ -0,0 +1,19 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:controls="clr-namespace:HandyControl.Controls">
+
+    <ResourceDictionary.MergedDictionaries>
+        <ResourceDictionary Source="LoadingBaseStyle.xaml"/>
+    </ResourceDictionary.MergedDictionaries>
+    
+    <Style x:Key="LoadingCircleBaseStyle" BasedOn="{StaticResource LoadingBaseStyle}" TargetType="controls:LoadingCircle">
+        <Setter Property="Width" Value="40"/>
+        <Setter Property="Height" Value="40"/>
+        <Setter Property="DotDiameter" Value="5"/>
+        <Setter Property="DotInterval" Value="30"/>
+        <Setter Property="DotOffSet" Value="60"/>
+        <Setter Property="DotDelayTime" Value="90"/>
+        <Setter Property="DotSpeed" Value="4"/>
+    </Style>
+
+</ResourceDictionary>