Merge pull request #74 from tmat/230

Change version back to 2.3.0

Author: tmat

build/Versions.props

@@ -1,6 +1,6 @@
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <VersionBase>2.3.1</VersionBase>
+    <VersionBase>2.3.0</VersionBase>
     <PreReleaseVersionLabel></PreReleaseVersionLabel>
 
     <SystemCollectionsImmutableVersion>1.3.1</SystemCollectionsImmutableVersion>