diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -71,6 +71,17 @@
    * link to external URL 
    * when drag-and-drop link, it automatically transform currently selected item to the link
    * drag and drop URL as a link (from address bar in web browser, such as firefox or chromium )   
+   * close button for Pan/Zoom widget
    * single image selection using wacom side button (convenient when overlapped images) 
    * grey out save button when reading a file at first
    * white-out bug fix when opening multiple pdf files 
+
+0.2.1: 2 Jun 2013 
+   * touch support: touch is now used for zooming and panning
+   * any selected items can be transformed into a link
+   * layer widget (show current content of layer and navigate other layers)
+   * very simple versioning support (available under File/Save Version) 
+   * notify a linked item with transparent yellow box when hovered over
+   * page arranged at the center not left-upper corner
+   * rendering improvement especially when a pen stroke is being drawn 
+   * context menu whenever right-clicking on selected item 
diff --git a/exe/hoodle.hs b/exe/hoodle.hs
--- a/exe/hoodle.hs
+++ b/exe/hoodle.hs
@@ -1,9 +1,9 @@
 -----------------------------------------------------------------------------
 -- |
 -- Module      : Main
--- Copyright   : (c) 2011, 2012 Ian-Woo Kim
+-- Copyright   : (c) 2011-2013 Ian-Woo Kim
 --
--- License     : BSD3
+-- License     : GPL-3
 -- Maintainer  : Ian-Woo Kim <ianwookim@gmail.com>
 -- Stability   : experimental
 -- Portability : GHC
diff --git a/hoodle.cabal b/hoodle.cabal
--- a/hoodle.cabal
+++ b/hoodle.cabal
@@ -1,5 +1,5 @@
 Name:		hoodle
-Version:	0.2.0
+Version:	0.2.1
 Synopsis:	Executable for hoodle
 Description: 	Hoodle is a pen notetaking program written in haskell. 
 Homepage:       http://ianwookim.org/hoodle
@@ -24,7 +24,7 @@
   Build-Depends: 
                  base>4, 
                  cmdargs >= 0.7, 
-                 hoodle-core == 0.11, 
+                 hoodle-core == 0.12, 
                  hoodle 
 
 Library
@@ -39,7 +39,7 @@
                    cmdargs >= 0.7,
                    configurator == 0.2.*,
                    dyre >= 0.8.11, 
-                   hoodle-core == 0.11 
+                   hoodle-core == 0.12 
   Exposed-Modules: 
                    Hoodle.ProgType
                    Hoodle.Job
diff --git a/lib/Hoodle/StartUp.hs b/lib/Hoodle/StartUp.hs
--- a/lib/Hoodle/StartUp.hs
+++ b/lib/Hoodle/StartUp.hs
@@ -42,6 +42,7 @@
   , Dyre.configDir = Just dirHoodled
   , Dyre.realMain = hoodleMain 
   , Dyre.showError = showError 
+  , Dyre.ghcOpts = [ "-threaded" ]
   } 
 
 -- |