spine-runtimes/spine-csharp/spine-csharp.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <RootNamespace>Spine</RootNamespace>
    <AssemblyName>spine-csharp</AssemblyName>
    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
  </PropertyGroup>

  <ItemGroup>
    <Compile Include="src\**\*.cs" Exclude="src\ColorUnity.cs;src\ColorMono.cs" />
  </ItemGroup>

  <ItemGroup>
    <None Remove="src\ColorUnity.cs" />
    <None Remove="src\ColorMono.cs" />
    <None Remove="**\*.meta" />
    <None Remove="**\*.asmdef" />
    <None Remove="**\package.json" />
  </ItemGroup>
</Project>