* version 0.1
Add CUI interface
Add Vim interface
Fix some bugs
Add some documents
Improve Extract superclass refactoring.

* version 0.0.3
Refactoring class method is available
Modify undo
FreeRIDE Interface is available
Fix bugs and refactor code

* version 0.0.2
Extract superclass is now available
Fix many bugs
Modify ripper to run on ruby 1.8
Modify emacs interface to refactor files that has `#!ruby'

* version 0.0.1
Initial release