replace Jil with Newtonsoft.Json

src/coverlet.core/CoverageResult.cs

@@ -1,8 +1,6 @@
 using System.Collections.Generic;
 using System.IO;
 
-using Jil;
-
 namespace Coverlet.Core
 {
     public class BranchInfo

src/coverlet.core/Reporters/JsonReporter.cs

@@ -1,5 +1,4 @@
-using System.IO;
-using Jil;
+using Newtonsoft.Json;
 
 namespace Coverlet.Core.Reporters
 {
@@ -11,11 +10,7 @@ namespace Coverlet.Core.Reporters
 
         public string Report(CoverageResult result)
         {
-            using (var writer = new StringWriter())
-            {
-                JSON.Serialize(result.Modules, writer, Options.PrettyPrint);
-                return writer.ToString();
-            }
+            return JsonConvert.SerializeObject(result.Modules, Formatting.Indented);
         }
     }
 }

src/coverlet.core/coverlet.core.csproj

@@ -6,8 +6,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Jil" Version="2.15.4" />
     <PackageReference Include="Mono.Cecil" Version="0.10.0" />
+    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
     <PackageReference Include="System.Reflection.Metadata" Version="1.5.0" />
     <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="2.0.1" />
   </ItemGroup>