Bump version (#53)

* Fixes #49

* Closes #51

* 2.1.0 > 2.1.1

Author: daningalla

src/Vertical.CommandLine.csproj

@@ -9,7 +9,7 @@
     <PublicSign Condition="'$(OS)' != 'Windows_NT'">true</PublicSign>
     <Description>Simple command line argument mapping</Description>
     <Authors>Vertical Software contributors</Authors>
-    <VersionPrefix>2.1.0</VersionPrefix>
+    <VersionPrefix>2.1.1</VersionPrefix>
     <PackageId>vertical-commandline</PackageId>
     <PackageTags>commandline;utilities</PackageTags>
     <PackageProjectUrl>https://github.com/verticalsoftware/vertical-commandline</PackageProjectUrl>