Update to R# 2019.3 (#123)

* Update to R# 2019.3

* notes

Author: robertcoltheart

src/Machine.Specifications.Runner.ReSharper/Machine.Specifications.Runner.ReSharper.csproj

@@ -9,21 +9,21 @@
     <Description>A ReSharper runner for the Context/Specification framework Machine.Specifications</Description>
     <Authors>Machine Specifications</Authors>
     <PackageTags>test;unit;testing;context;specification;bdd;tdd;mspec;runner;resharper</PackageTags>
-    <PackageReleaseNotes>Adds support for R# and Rider 2019.2</PackageReleaseNotes>
+    <PackageReleaseNotes>Adds support for R# and Rider 2019.3</PackageReleaseNotes>
     <PackageIconUrl>http://github.com/machine/media/raw/master/Machine.Specifications-128x128.png</PackageIconUrl>
     <PackageProjectUrl>http://github.com/machine/machine.specifications.runner.resharper</PackageProjectUrl>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <IncludeBuildOutput>false</IncludeBuildOutput>
   </PropertyGroup>
 
   <PropertyGroup>
-    <SdkVersion>2019.2.0</SdkVersion>
+    <SdkVersion>2019.3.0</SdkVersion>
     <WaveVersionBase>$(SdkVersion.Substring(2,2))$(SdkVersion.Substring(5,1))</WaveVersionBase>
     <WaveVersion>$(WaveVersionBase).0.0</WaveVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="JetBrains.ReSharper.SDK" Version="2019.2.3" PrivateAssets="All" />
+    <PackageReference Include="JetBrains.ReSharper.SDK" Version="2019.3.0" PrivateAssets="All" />
     <PackageReference Include="Machine.Specifications.Runner.Utility" Version="1.0.0" PrivateAssets="All" />
     <PackageReference Include="Wave" Version="[$(WaveVersion)]" />
   </ItemGroup>

src/Machine.Specifications.Runner.ReSharper/MspecTestElementsSource.cs

@@ -37,7 +37,7 @@ public MspecTestElementsSource(
 
         public override PertinenceResult IsSupported(IProject project, TargetFrameworkId targetFrameworkId)
         {
-            return targetFrameworkId.IsNetFramework ? PertinenceResult.Yes : PertinenceResult.No;
+            return targetFrameworkId.IsNetFramework ? PertinenceResult.Yes : PertinenceResult.No();
         }
 
         protected override void ProcessProject(

src/Machine.Specifications.Runner.ReSharper/MspecVsTestArtefactExplorer.cs

@@ -39,7 +39,7 @@ public override PertinenceResult IsSupported(IProject project, TargetFrameworkId
             if (result != PertinenceResult.Yes)
                 return result;
 
-            return targetFrameworkId.IsNetFramework ? PertinenceResult.No : PertinenceResult.Yes;
+            return targetFrameworkId.IsNetFramework ? PertinenceResult.No() : PertinenceResult.Yes;
         }
 
         protected override IEnumerable<string> RequiredNuGetDependencies()