Marking some classes as partial.

AsyncRx.NET/System.Reactive.Async/System/Reactive/Linq/AsyncObservable.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace System.Reactive.Linq
 {
-    public static class AsyncObservable
+    public static partial class AsyncObservable
     {
         public static IAsyncObservable<T> Create<T>(Func<IAsyncObserver<T>, Task<IAsyncDisposable>> subscribeAsync)
         {

AsyncRx.NET/System.Reactive.Async/System/Reactive/Linq/AsyncObserver.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace System.Reactive.Linq
 {
-    public static class AsyncObserver
+    public static partial class AsyncObserver
     {
         public static IAsyncObserver<T> Create<T>(Func<T, Task> onNextAsync, Func<Exception, Task> onErrorAsync, Func<Task> onCompletedAsync)
         {