Enable Docs and add release notes (#801)

Directory.Build.props

@@ -10,6 +10,10 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" '$(Configuration)'=='Release' ">
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+  </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)stylecop.json" InProject="false" />

src/CommunityToolkit/Xamarin.CommunityToolkit/Xamarin.CommunityToolkit.csproj

@@ -21,15 +21,7 @@
     <NeutralLanguage>en</NeutralLanguage>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
     <RepositoryUrl>https://github.com/xamarin/XamarinCommunityToolkit</RepositoryUrl>
-    <PackageReleaseNotes>
-      
-      
-      
-      <!-- See if we can host these on MS docs? -->
-    
-    
-    
-    </PackageReleaseNotes>
+    <PackageReleaseNotes>See: http://aka.ms/xct-release-notes</PackageReleaseNotes>
     <DefineConstants>$(DefineConstants);</DefineConstants>
     <UseFullSemVerForNuGet>false</UseFullSemVerForNuGet>
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>