Embed the package icon instead of linking to it.

Author: airbreather

Directory.Build.props

@@ -5,6 +5,12 @@
     <SolutionDir Condition=" '$(SolutionDir)' == '' ">$(MSBuildThisFileDirectory)</SolutionDir>
 
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)scskey.snk</AssemblyOriginatorKeyFile>
+
+    <PackageIcon>icon.png</PackageIcon>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Condition=" '$(IsPackable)' == 'true' " Include="$(MSBuildThisFileDirectory)icon.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
+
 </Project>

src/ProjNet/ProjNET.csproj

@@ -15,7 +15,6 @@
   <PropertyGroup Label="NuGet Package Info">
     <PackageId>ProjNET</PackageId>
     <Authors>Morten Nielsen, NetTopologySuite-Team</Authors>
-    <PackageIconUrl>https://raw.githubusercontent.com/NetTopologySuite/ProjNet4GeoAPI/master/icon.png</PackageIconUrl>
     <PackageLicenseExpression>LGPL-2.1-or-later</PackageLicenseExpression>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <PackageDescription>.NET Spatial Reference and Projection Engine.