diff --git a/.paket/Paket.Restore.targets b/.paket/Paket.Restore.targets
index aed3c3fd..a7955581 100644
--- a/.paket/Paket.Restore.targets
+++ b/.paket/Paket.Restore.targets
@@ -7,7 +7,7 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
 
     <DetectedMSBuildVersion>$(MSBuildVersion)</DetectedMSBuildVersion>
-    <DetectedMSBuildVersion Condition="$(MSBuildVersion) == ''">15.0.0</DetectedMSBuildVersion>
+    <DetectedMSBuildVersion Condition="'$(MSBuildVersion)' == ''">15.0.0</DetectedMSBuildVersion>
     <MSBuildSupportsHashing>false</MSBuildSupportsHashing>
     <MSBuildSupportsHashing Condition=" '$(DetectedMSBuildVersion)' &gt; '15.8.0' ">true</MSBuildSupportsHashing>
     <!-- Mark that this target file has been loaded.  -->
@@ -27,44 +27,13 @@
     <PaketBootStrapperExePath Condition=" '$(PaketBootStrapperExePath)' == '' AND Exists('$(PaketRootPath)paket.bootstrapper.exe')">$(PaketRootPath)paket.bootstrapper.exe</PaketBootStrapperExePath>
     <PaketBootStrapperExePath Condition=" '$(PaketBootStrapperExePath)' == '' ">$(PaketToolsPath)paket.bootstrapper.exe</PaketBootStrapperExePath>
     <PaketBootStrapperExeDir Condition=" Exists('$(PaketBootStrapperExePath)') " >$([System.IO.Path]::GetDirectoryName("$(PaketBootStrapperExePath)"))\</PaketBootStrapperExeDir>
-
-    <!-- Paket -->
-
-    <!-- windows, root => tool => proj style => bootstrapper => global -->
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND Exists('$(PaketRootPath)paket.exe') ">$(PaketRootPath)paket.exe</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND Exists('$(PaketToolsPath)paket.exe') ">$(PaketToolsPath)paket.exe</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND '$(PaketBootstrapperStyle)' == 'proj' ">$(PaketToolsPath)paket.exe</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND Exists('$(PaketBootStrapperExeDir)') ">$(_PaketBootStrapperExeDir)paket.exe</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' ">paket.exe</PaketExePath>
-
-    <!-- no windows, try native paket as default,  root => tool => proj style => mono paket => bootstrpper => global -->
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketRootPath)paket') ">$(PaketRootPath)paket</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketToolsPath)paket') ">$(PaketToolsPath)paket</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND '$(PaketBootstrapperStyle)' == 'proj' ">$(PaketToolsPath)paket</PaketExePath>
-
-    <!-- no windows, try mono paket -->
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketRootPath)paket.exe') ">$(PaketRootPath)paket.exe</PaketExePath>
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketToolsPath)paket.exe') ">$(PaketToolsPath)paket.exe</PaketExePath>
-
-    <!-- no windows, try bootstrapper -->
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketBootStrapperExeDir)') ">$(PaketBootStrapperExeDir)paket.exe</PaketExePath>
-
-    <!-- no windows, try global native paket -->
-    <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' ">paket</PaketExePath>
-
-    <!-- Paket command -->
-    <_PaketExeExtension>$([System.IO.Path]::GetExtension("$(PaketExePath)"))</_PaketExeExtension>
-    <PaketCommand Condition=" '$(PaketCommand)' == '' AND '$(_PaketExeExtension)' == '.dll' ">dotnet "$(PaketExePath)"</PaketCommand>
-    <PaketCommand Condition=" '$(PaketCommand)' == '' AND '$(OS)' != 'Windows_NT' AND '$(_PaketExeExtension)' == '.exe' ">$(MonoPath) --runtime=v4.0.30319 "$(PaketExePath)"</PaketCommand>
-    <PaketCommand Condition=" '$(PaketCommand)' == '' ">"$(PaketExePath)"</PaketCommand>
-
-
+    
     <PaketBootStrapperCommand Condition=" '$(OS)' == 'Windows_NT'">"$(PaketBootStrapperExePath)"</PaketBootStrapperCommand>
     <PaketBootStrapperCommand Condition=" '$(OS)' != 'Windows_NT' ">$(MonoPath) --runtime=v4.0.30319 "$(PaketBootStrapperExePath)"</PaketBootStrapperCommand>
 
     <!-- Disable automagic references for F# dotnet sdk -->
     <!-- This will not do anything for other project types -->
-    <!-- see https://github.com/fsharp/fslang-design/blob/master/RFCs/FS-1032-fsharp-in-dotnet-sdk.md -->
+    <!-- see https://github.com/fsharp/fslang-design/blob/master/tooling/FST-1002-fsharp-in-dotnet-sdk.md -->
     <DisableImplicitFSharpCoreReference>true</DisableImplicitFSharpCoreReference>
     <DisableImplicitSystemValueTupleReference>true</DisableImplicitSystemValueTupleReference>
 
@@ -74,6 +43,57 @@
     <PaketIntermediateOutputPath Condition=" '$(PaketIntermediateOutputPath)' == '' ">$(BaseIntermediateOutputPath.TrimEnd('\').TrimEnd('\/'))</PaketIntermediateOutputPath>
   </PropertyGroup>
 
+  <!-- Check if paket is available as local dotnet cli tool -->
+  <Target Name="SetPaketCommand" >
+  
+    <!-- Call 'dotnet paket' and see if it returns without an error. Mute all the output. -->
+    <Exec Command="dotnet paket --version" IgnoreExitCode="true" StandardOutputImportance="low" StandardErrorImportance="low" >
+      <Output TaskParameter="ExitCode" PropertyName="LocalPaketToolExitCode" />
+    </Exec>
+
+    <!-- If local paket tool is found, use that -->
+    <PropertyGroup Condition=" '$(LocalPaketToolExitCode)' == '0' ">
+      <InternalPaketCommand>dotnet paket</InternalPaketCommand>
+    </PropertyGroup>
+
+    <!-- If not, then we go through our normal steps of setting the Paket command.  -->
+    <PropertyGroup Condition=" '$(LocalPaketToolExitCode)' != '0' ">
+      <!-- windows, root => tool => proj style => bootstrapper => global -->
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND Exists('$(PaketRootPath)paket.exe') ">$(PaketRootPath)paket.exe</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND Exists('$(PaketToolsPath)paket.exe') ">$(PaketToolsPath)paket.exe</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND '$(PaketBootstrapperStyle)' == 'proj' ">$(PaketToolsPath)paket.exe</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' AND Exists('$(PaketBootStrapperExeDir)') ">$(_PaketBootStrapperExeDir)paket.exe</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' == 'Windows_NT' ">paket.exe</PaketExePath>
+
+      <!-- no windows, try native paket as default,  root => tool => proj style => mono paket => bootstrpper => global -->
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketRootPath)paket') ">$(PaketRootPath)paket</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketToolsPath)paket') ">$(PaketToolsPath)paket</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND '$(PaketBootstrapperStyle)' == 'proj' ">$(PaketToolsPath)paket</PaketExePath>
+
+      <!-- no windows, try mono paket -->
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketRootPath)paket.exe') ">$(PaketRootPath)paket.exe</PaketExePath>
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketToolsPath)paket.exe') ">$(PaketToolsPath)paket.exe</PaketExePath>
+
+      <!-- no windows, try bootstrapper -->
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' AND Exists('$(PaketBootStrapperExeDir)') ">$(PaketBootStrapperExeDir)paket.exe</PaketExePath>
+
+      <!-- no windows, try global native paket -->
+      <PaketExePath Condition=" '$(PaketExePath)' == '' AND '$(OS)' != 'Windows_NT' ">paket</PaketExePath>
+
+      <_PaketExeExtension>$([System.IO.Path]::GetExtension("$(PaketExePath)"))</_PaketExeExtension>
+      <InternalPaketCommand Condition=" '$(InternalPaketCommand)' == '' AND '$(_PaketExeExtension)' == '.dll' ">dotnet "$(PaketExePath)"</InternalPaketCommand>
+      <InternalPaketCommand Condition=" '$(InternalPaketCommand)' == '' AND '$(OS)' != 'Windows_NT' AND '$(_PaketExeExtension)' == '.exe' ">$(MonoPath) --runtime=v4.0.30319 "$(PaketExePath)"</InternalPaketCommand>
+      <InternalPaketCommand Condition=" '$(InternalPaketCommand)' == '' ">"$(PaketExePath)"</InternalPaketCommand>
+
+    </PropertyGroup>
+
+    <!-- The way to get a property to be available outside the target is to use this task. -->
+    <CreateProperty Value="$(InternalPaketCommand)">
+      <Output TaskParameter="Value" PropertyName="PaketCommand"/>
+    </CreateProperty>
+
+  </Target>
+
   <Target Name="PaketBootstrapping" Condition="Exists('$(PaketToolsPath)paket.bootstrapper.proj')">
     <MSBuild Projects="$(PaketToolsPath)paket.bootstrapper.proj" Targets="Restore" />
   </Target>
@@ -81,7 +101,7 @@
   <!-- Official workaround for https://docs.microsoft.com/en-us/visualstudio/msbuild/getfilehash-task?view=vs-2019 -->
   <UsingTask TaskName="Microsoft.Build.Tasks.GetFileHash" AssemblyName="Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" Condition=" '$(MSBuildSupportsHashing)' == 'true' And '$(DetectedMSBuildVersion)' &lt; '16.0.360' " />
   <UsingTask TaskName="Microsoft.Build.Tasks.VerifyFileHash" AssemblyName="Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" Condition=" '$(MSBuildSupportsHashing)' == 'true' And '$(DetectedMSBuildVersion)' &lt; '16.0.360' " />
-  <Target Name="PaketRestore" Condition="'$(PaketRestoreDisabled)' != 'True'" BeforeTargets="_GenerateDotnetCliToolReferenceSpecs;_GenerateProjectRestoreGraphPerFramework;_GenerateRestoreGraphWalkPerFramework;CollectPackageReferences" DependsOnTargets="PaketBootstrapping">
+  <Target Name="PaketRestore" Condition="'$(PaketRestoreDisabled)' != 'True'" BeforeTargets="_GenerateDotnetCliToolReferenceSpecs;_GenerateProjectRestoreGraphPerFramework;_GenerateRestoreGraphWalkPerFramework;CollectPackageReferences" DependsOnTargets="SetPaketCommand;PaketBootstrapping">
 
     <!-- Step 1 Check if lockfile is properly restored (if the hash of the lockfile and the cache-file match) -->
     <PropertyGroup>
@@ -203,7 +223,7 @@
         <PackageName>$([System.String]::Copy('%(PaketReferencesFileLines.Identity)').Split(',')[0])</PackageName>
         <PackageVersion>$([System.String]::Copy('%(PaketReferencesFileLines.Identity)').Split(',')[1])</PackageVersion>
         <AllPrivateAssets>$([System.String]::Copy('%(PaketReferencesFileLines.Identity)').Split(',')[4])</AllPrivateAssets>
-        <CopyLocal Condition="'$(Splits)' == '6'">$([System.String]::Copy('%(PaketReferencesFileLines.Identity)').Split(',')[5])</CopyLocal>
+        <CopyLocal Condition="'%(PaketReferencesFileLinesInfo.Splits)' == '6'">$([System.String]::Copy('%(PaketReferencesFileLines.Identity)').Split(',')[5])</CopyLocal>
       </PaketReferencesFileLinesInfo>
       <PackageReference Include="%(PaketReferencesFileLinesInfo.PackageName)">
         <Version>%(PaketReferencesFileLinesInfo.PackageVersion)</Version>
@@ -246,7 +266,7 @@
     </PropertyGroup>
   </Target>
 
-  <Target Name="PaketOverrideNuspec" AfterTargets="GenerateNuspec" Condition="('$(IsPackable)' == '' Or '$(IsPackable)' == 'true') And Exists('$(PaketIntermediateOutputPath)/$(MSBuildProjectFile).references')" >
+  <Target Name="PaketOverrideNuspec" DependsOnTargets="SetPaketCommand" AfterTargets="GenerateNuspec" Condition="('$(IsPackable)' == '' Or '$(IsPackable)' == 'true') And Exists('$(PaketIntermediateOutputPath)/$(MSBuildProjectFile).references')" >
     <ItemGroup>
       <_NuspecFilesNewLocation Include="$(PaketIntermediateOutputPath)\$(Configuration)\*.nuspec"/>
       <MSBuildMajorVersion Include="$(DetectedMSBuildVersion.Replace(`-`, `.`).Split(`.`)[0])" />
@@ -300,7 +320,7 @@
               DevelopmentDependency="$(DevelopmentDependency)"
               BuildOutputInPackage="@(_BuildOutputInPackage)"
               TargetPathsToSymbols="@(_TargetPathsToSymbols)"
-              SymbolPackageFormat="symbols.nupkg"
+              SymbolPackageFormat="$(SymbolPackageFormat)"
               TargetFrameworks="@(_TargetFrameworks)"
               AssemblyName="$(AssemblyName)"
               PackageOutputPath="$(PackageOutputAbsolutePath)"
@@ -347,7 +367,7 @@
               DevelopmentDependency="$(DevelopmentDependency)"
               BuildOutputInPackage="@(_BuildOutputInPackage)"
               TargetPathsToSymbols="@(_TargetPathsToSymbols)"
-              SymbolPackageFormat="symbols.nupkg"
+              SymbolPackageFormat="$(SymbolPackageFormat)"
               TargetFrameworks="@(_TargetFrameworks)"
               AssemblyName="$(AssemblyName)"
               PackageOutputPath="$(PackageOutputAbsolutePath)"
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 0b3d45f9..494d0e68 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,8 @@
+#### 1.3.9-beta001 - 12.12.2019
+
+* Extension point added directly before calling the runtime service method.
+* Extension point to override web service result serialization.
+
 #### 1.3.8 - 29.08.2019
 
 * Fix: duplicate complex type definitions in WSDL document.
diff --git a/docs/articles/release-notes.md b/docs/articles/release-notes.md
index 0b3d45f9..494d0e68 100644
--- a/docs/articles/release-notes.md
+++ b/docs/articles/release-notes.md
@@ -1,3 +1,8 @@
+#### 1.3.9-beta001 - 12.12.2019
+
+* Extension point added directly before calling the runtime service method.
+* Extension point to override web service result serialization.
+
 #### 1.3.8 - 29.08.2019
 
 * Fix: duplicate complex type definitions in WSDL document.