Chore: 2.2.0

# [2.2.0](v2.1.1...v2.2.0) (2021-05-21)

## New
* exposingUrls coscine/issues#1527

src/Tree/Tree.csproj

@@ -5,7 +5,7 @@
 		<AssemblyName>Coscine.Api.Tree</AssemblyName>
 		<GenerateDocumentationFile>true</GenerateDocumentationFile>
 		<TargetFramework>net5.0</TargetFramework>
-		<Version>2.1.1</Version>
+		<Version>2.2.0</Version>
 	</PropertyGroup>
 	<PropertyGroup>
 		<Authors>RWTH Aachen University</Authors>