update framework dependency

src/LockFreeDoublyLinkedList.csproj

@@ -1,20 +1,19 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1</TargetFrameworks>
     <!-- net45;net40 -->
     <Title>Lock free doubly linked list</Title>
     <Product>Lock free doubly linked list</Product>
     <PackageId>LockFreeDoublyLinkedList</PackageId>
     <Description>A lock free doubly linked list for high concurrency.</Description>
-    <Version>3.1.0.0</Version>
+    <Version>4.0.0.0</Version>
     <Authors>Christoph Müller ([email protected])</Authors>
     <Company>Christoph Müller ([email protected])</Company>
-    <Copyright>Copyright © Christoph Müller 2018</Copyright>
+    <Copyright>Copyright © Christoph Müller 2018–2020</Copyright>
     <NeutralLanguage>en</NeutralLanguage>
     <IncludeSymbols>true</IncludeSymbols>
-    <PackageProjectUrl>https://github.com/2i/LockFreeDoublyLinkedList</PackageProjectUrl>
-    <PackageLicenseUrl>https://www.apache.org/licenses/LICENSE-2.0.html
-    </PackageLicenseUrl>
+    <PackageProjectUrl>https://github.com/c7hm4r/LockFreeDoublyLinkedList</PackageProjectUrl>
+    <PackageLicenseUrl>https://www.apache.org/licenses/LICENSE-2.0.html</PackageLicenseUrl>
     <PackageTags>lock-free thread-safe linked list concurrency</PackageTags>
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
   </PropertyGroup>

test/test.csproj

@@ -4,7 +4,7 @@
   </ItemGroup>
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
@@ -18,4 +18,4 @@
     <Optimize>true</Optimize>
     <DefineConstants></DefineConstants>
   </PropertyGroup>
-</Project>
+</Project>