Updated version.

Author: Oren (electricessence)

Open.Hierarchy.csproj

@@ -15,7 +15,7 @@ Part of the "Open" set of libraries.
 		<RepositoryUrl>https://github.com/Open-NET-Libraries/Open.Hierarchy/</RepositoryUrl>
 		<RepositoryType>git</RepositoryType>
 		<PackageTags>dotnet, dotnetcore, cs, tree, node, hierarchy, parent, child, root</PackageTags>
-		<Version>1.7.3</Version>
+		<Version>1.8.0</Version>
 		<PackageReleaseNotes></PackageReleaseNotes>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>