Updating to full v1.6, adding v1.6 NuGet package

Author: SteveWilkes

NuGet/AgileObjects.AgileMapper.1.6.0.nupkg

@@ -9,7 +9,7 @@
     <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
     <RepositoryType>git</RepositoryType>
     <RepositoryUrl>https://github.com/AgileObjects/AgileMapper</RepositoryUrl>
-    <Version>1.6.0-preview5</Version>
+    <Version>1.6.0</Version>
     <AssemblyVersion>1.6.0.0</AssemblyVersion>
     <FileVersion>1.6.0.0</FileVersion>
   </PropertyGroup>