Update addin version, update decompiler package version

ILSpy.AddIn/source.extension.vsixmanifest

@@ -3,7 +3,7 @@
   <Identifier Id="a9120dbe-164a-4891-842f-fb7829273838">
     <Name>ILSpy</Name>
     <Author>IC#Code</Author>
-    <Version>1.2</Version>
+    <Version>1.3</Version>
     <Description xml:space="preserve">Integrates the ILSpy decompiler into Visual Studio.</Description>
     <Icon>ILSpy-Large.ico</Icon>
     <License>license.txt</License>

packages/ICSharpCode.Decompiler.nuspec

@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
   <metadata>
     <id>ICSharpCode.Decompiler</id>
-    <version>2.3.0</version>
+    <version>2.3.1</version>
     <title>ILSpy Decompiler Engine</title>
     <authors>Daniel Grunwald, David Srbecky, Ed Harvey, Siegfried Pammer</authors>
     <owners>Daniel Grunwald, SharpDevelop</owners>