Add netStandard2.1 target framework

Cleanup, update dependencies

Author: FObermaier

ProjNet4GeoAPI.sln

@@ -1,13 +1,14 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.29020.237
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36408.4 d17.14
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ProjNET", "src\ProjNet\ProjNET.csproj", "{E028BDD2-55E1-4E5F-BE31-35FAEC8D6428}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{AC62B826-FD1B-43B9-9E20-696588E560E7}"
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
+		src\Directory.Build.props = src\Directory.Build.props
 		icon.png = icon.png
 	EndProjectSection
 EndProject

src/Directory.Build.props

@@ -102,9 +102,4 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
 
-  <ItemGroup>
-    <!-- SourceLink adds stuff to let debuggers step into our code. -->
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
-  </ItemGroup>
-
 </Project>

src/ProjNet.Benchmark/ProjNet.Benchmark.csproj

@@ -3,7 +3,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <NoWarn>1701;1702;1591</NoWarn>
 
     <IsPackable>false</IsPackable>

src/ProjNet/ProjNET.csproj

@@ -3,9 +3,10 @@
 
   <PropertyGroup>
     <RootNamespace>ProjNet</RootNamespace>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
     <SignAssembly>true</SignAssembly>
-    <EnableApiCompat>true</EnableApiCompat>
+	  <EnablePackageValidation>true</EnablePackageValidation>
+	  <PackageValidationBaselineVersion>2.0.0</PackageValidationBaselineVersion>
   </PropertyGroup>
 
   <PropertyGroup Label="Assembly Info">
@@ -24,16 +25,9 @@ Proj.NET performs point-to-point coordinate conversions between geodetic coordin
     <PackageTags>OGC;SFS;Projection</PackageTags>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Memory" Version="4.5.3" />
-    <PackageReference Include="System.Numerics.Vectors" Version="4.5.0" />
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="System.Memory" Version="4.6.0" />
+	<!--<PackageReference Include="System.Numerics.Vectors" Version="4.6.0" />-->
   </ItemGroup>
 
-	<ItemGroup Condition=" '$(EnableApiCompat)' == 'true' ">
-		<PackageReference Include="Microsoft.DotNet.ApiCompat" Version="6.0.0-beta.21159.11" PrivateAssets="All" />
-		<PackageDownload Include="ProjNet" Version="[2.0.0]" PrivateAssets="All" />
-
-		<ResolvedMatchingContract Include="$(NugetPackageRoot)projnet\2.0.0\lib\netstandard2.0\ProjNET.dll" />
-	</ItemGroup>
-
 </Project>

test/ProjNet.Tests/ProjNET.Tests.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="Npgsql" Version="8.0.3" />
   </ItemGroup>