Pulled .NET version back to 3.5 for compatibility per PR feedback.

* Updates Newtonsoft.Json lib to latest 3.5-compatible version.
* Removes unused, otherwise incompatible System.Xaml reference

BabySmash.csproj

@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>BabySmash</RootNamespace>
     <AssemblyName>BabySmash</AssemblyName>
-    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <WarningLevel>4</WarningLevel>
@@ -72,8 +72,8 @@
     <Compile Include="Extensions\ObjectExtensions.cs" />
     <Compile Include="Shapes\BabySmashShape.cs" />
     <Compile Include="WordFinder.cs" />
-    <Reference Include="Newtonsoft.Json, Version=8.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>packages\Newtonsoft.Json.8.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
+    <Reference Include="Newtonsoft.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <HintPath>packages\Newtonsoft.Json.9.0.1\lib\net35\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="PresentationFramework.Luna">
@@ -87,7 +87,6 @@
     <Reference Include="System.Drawing" />
     <Reference Include="System.Speech" />
     <Reference Include="System.Windows.Forms" />
-    <Reference Include="System.Xaml" />
     <Reference Include="System.Xml.Linq">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>

app.config

@@ -58,5 +58,5 @@
             </setting>
         </BabySmash.Properties.Settings>
     </userSettings>
-    <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/></startup>
+    <startup><supportedRuntime version="v2.0.50727"/></startup>
 </configuration>

packages.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="8.0.2" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net35" />
 </packages>