Add netstandard2.0

Author: RehanSaeed

Source/Boxed.Mapping/Boxed.Mapping.csproj

@@ -1,15 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup Label="Build">
-    <TargetFrameworks>netstandard1.3</TargetFrameworks>
+    <TargetFrameworks>netstandard1.3;netstandard2.0</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <CodeAnalysisRuleSet>../../MinimumRecommendedRulesWithStyleCop.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
 
   <PropertyGroup Label="Package">
-    <VersionPrefix>1.1.0</VersionPrefix>
+    <VersionPrefix>1.2.0</VersionPrefix>
     <Authors>Muhammad Rehan Saeed (RehanSaeed.com)</Authors>
     <Product>Object Mapping Boxed</Product>
     <Description>An object to object mapper that does not use reflection.</Description>