Switch Cecil reference to PackageReference.

Use version 0.10.1.

Author: KirillOsenkov

ICSharpCode.NRefactory.Cecil/ICSharpCode.NRefactory.Cecil.csproj

@@ -82,21 +82,15 @@
     <CheckForOverflowUnderflow>False</CheckForOverflowUnderflow>
     <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
   </PropertyGroup>
+  <PropertyGroup>
+    <NuGetVersionCecil Condition="$(NuGetVersionCecil) == ''">0.10.1</NuGetVersionCecil>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Mono.Cecil" Version="$(NuGetVersionCecil)" PrivateAssets="all" />
+  </ItemGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
-    <Reference Include="Mono.Cecil">
-      <HintPath>$(SolutionDir)\packages\Mono.Cecil.0.10.0-beta6\lib\net40\Mono.Cecil.dll</HintPath>
-    </Reference>
-    <Reference Include="Mono.Cecil.Mdb">
-      <HintPath>$(SolutionDir)\packages\Mono.Cecil.0.10.0-beta6\lib\net40\Mono.Cecil.Mdb.dll</HintPath>
-    </Reference>
-    <Reference Include="Mono.Cecil.Pdb">
-      <HintPath>$(SolutionDir)\packages\Mono.Cecil.0.10.0-beta6\lib\net40\Mono.Cecil.Pdb.dll</HintPath>
-    </Reference>
-    <Reference Include="Mono.Cecil.Rocks">
-      <HintPath>$(SolutionDir)\packages\Mono.Cecil.0.10.0-beta6\lib\net40\Mono.Cecil.Rocks.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\ICSharpCode.NRefactory\Properties\GlobalAssemblyInfo.cs">
@@ -112,7 +106,4 @@
       <Name>ICSharpCode.NRefactory</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup>
-    <None Include="packages.config" />
-  </ItemGroup>
 </Project>