Added support for net35 and net40

Author: snakefoot

src/NLog.Targets.Fluentd/NLog.Targets.Fluentd.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net45;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net35;net40;net45;netstandard2.0</TargetFrameworks>
 
     <Description>NLog Target that emits the log entries to a fluentd node</Description>
     <Authors>Moriyoshi Koizumi</Authors>
@@ -18,20 +18,19 @@
     <RepositoryUrl>git://github.com/fluent/NLog.Targets.Fluentd</RepositoryUrl>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'net45' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' != 'netstandard2.0' ">
     <DisableImplicitFrameworkReferences>true</DisableImplicitFrameworkReferences>
   </PropertyGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net45' ">
+  <ItemGroup Condition=" '$(TargetFramework)' != 'netstandard2.0' ">
     <Reference Include="System" />
     <Reference Include="System.Core" />
-    <Reference Include="Microsoft.CSharp" />
 
     <PackageReference Include="MsgPack.Cli" Version="0.8.0" />
     <PackageReference Include="NLog" Version="2.1.0.0" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' != 'net45' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="MsgPack.Cli" Version="0.9.2" />
     <PackageReference Include="NLog" Version="4.5.0-rc03" />
   </ItemGroup>