Manage .net standard in nuget

Author: codingseb

CodingSeb.ExpressionEvaluator/CodingSeb.ExpressionEvaluator.nuspec

@@ -13,6 +13,9 @@
         <tags>evaluation math expression-evaluator expression parser eval evaluate fluid C# calculation execute script</tags>
     </metadata>
     <files>
-        <file src="bin\Release\CodingSeb.ExpressionEvaluator.dll" target="lib\net45\CodingSeb.ExpressionEvaluator.dll" />
+        <file src="bin\Release\net45\CodingSeb.ExpressionEvaluator.dll" target="lib\net45\CodingSeb.ExpressionEvaluator.dll" />
+        <file src="bin\Release\net45\CodingSeb.ExpressionEvaluator.pdb" target="lib\net45\CodingSeb.ExpressionEvaluator.pdb" />
+        <file src="bin\Release\netstandard2.0\CodingSeb.ExpressionEvaluator.dll" target="lib\netstandard2.0\CodingSeb.ExpressionEvaluator.dll" />
+        <file src="bin\Release\netstandard2.0\CodingSeb.ExpressionEvaluator.pdb" target="lib\netstandard2.0\CodingSeb.ExpressionEvaluator.pdb" />
     </files>
 </package>