Somewhere along the line the recent changes got lost. Fixed it, I hope.

Tapeti.Saga/ISagaProvider.cs

@@ -4,8 +4,8 @@ namespace Tapeti.Saga
 {
     public interface ISagaProvider
     {
-        Task<ISaga<T>> Begin<T>() where T : class;
+        Task<ISaga<T>> Begin<T>(T initialState) where T : class;
         Task<ISaga<T>> Continue<T>(string sagaId) where T : class;
-        Task<ISaga<T>> Current<T>() where T : class;
+        Task<object> Continue(string sagaId);
     }
 }

Tapeti.Saga/Tapeti.Saga.csproj

@@ -9,8 +9,9 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Tapeti.Saga</RootNamespace>
     <AssemblyName>Tapeti.Saga</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -44,6 +45,17 @@
     <Compile Include="ISagaProvider.cs" />
     <Compile Include="ISagaStore.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SagaBindingMiddleware.cs" />
+    <Compile Include="SagaMemoryStore.cs" />
+    <Compile Include="SagaMessageMiddleware.cs" />
+    <Compile Include="SagaMiddleware.cs" />
+    <Compile Include="SagaProvider.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Tapeti.csproj">
+      <Project>{8ab4fd33-4aaa-465c-8579-9db3f3b23813}</Project>
+      <Name>Tapeti</Name>
+    </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

Test/MarcoController.cs

@@ -18,8 +18,10 @@ namespace Test
 
 
         //[StaticQueue("test")]
-        public PoloMessage Marco(MarcoMessage message)
+        public PoloMessage Marco(MarcoMessage message, Visualizer visualizer)
         {
+            visualizer.VisualizeMarco();
+
             /*
             using (sagaProvider.Begin<MarcoState>(new MarcoState
             {
@@ -60,9 +62,9 @@ namespace Test
         }
         */
 
-        public void Polo(PoloMessage message)
+        public void Polo(PoloMessage message, Visualizer visualizer)
         {
-            Console.WriteLine("Polo!");
+            visualizer.VisualizePolo();
         }
     }
 

Test/Program.cs

@@ -1,6 +1,7 @@
 using System;
 using SimpleInjector;
 using Tapeti;
+using Tapeti.Saga;
 using Tapeti.SimpleInjector;
 
 namespace Test
@@ -11,17 +12,15 @@ namespace Test
         {
             var container = new Container();
             container.Register<MarcoEmitter>();
+            container.Register<Visualizer>();
+            container.Register<ISagaStore, SagaMemoryStore>();
 
-
+            var config = new TapetiConfig("test", new SimpleInjectorDependencyResolver(container))
-            var topology = new TapetiTopologyBuilder()
+                .Use(new SagaMiddleware())
                 .RegisterAllControllers()
                 .Build();
 
-            using (var connection = new TapetiConnectionBuilder()
+            using (var connection = new TapetiConnection(config))
-                .SetExchange("test")
-                .SetDependencyResolver(new SimpleInjectorDependencyResolver(container))
-                .SetTopology(topology)
-                .Build())
             {   
                 Console.WriteLine("Subscribing...");
                 connection.Subscribe().Wait();

Test/Test.csproj

@@ -52,6 +52,7 @@
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="MarcoController.cs" />
+    <Compile Include="Visualizer.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />
@@ -62,6 +63,10 @@
       <Project>{8ab4fd33-4aaa-465c-8579-9db3f3b23813}</Project>
       <Name>Tapeti</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Tapeti.Saga\Tapeti.Saga.csproj">
+      <Project>{f84ad920-d5a1-455d-aed5-2542b3a47b85}</Project>
+      <Name>Tapeti.Saga</Name>
+    </ProjectReference>
     <ProjectReference Include="..\Tapeti.SimpleInjector\Tapeti.SimpleInjector.csproj">
       <Project>{d7ec6f86-eb3b-49c3-8fe7-6e8c1bb413a6}</Project>
       <Name>Tapeti.SimpleInjector</Name>