Nov 25, 2012 (0.40) 
 - Redone for Ruby 1.9.3 p327
 - RubyVM::ThreadFrame is now RubyVM::Frame. RubyVM::ThreadFrame is still 
   there for compatibility
-  Some small administrative and bug fixes

Oct 27, 2011 (0.39)
- Revise patch for 1.9.2 revision 33354
- save return value in one more C_RETURN hook 

March 15, 2011 (0.38) Ron Frankel Release
 - Add RubyVM::ThreadFrame.prev (same as RubyVM::ThreadFrame.current.prev)
 - Allow access to a C method type
 - Method extensions now included on UnboundMethods as well

Feb 1, 2011 (0.37)
 - 1.9.2 patches:
   * Mark VM Instruction sequences for no garbage collection if they are
     referred to by a ThreadFrame Object or are in ISEQS__ or ISEQ_SCRIPTS__

December 25, 2010 (0.35, 0.36)
  - 1.9.2 patches:
   * Add new compile-option flags: save_tree_node and save_compile_opts
   * Start saving parse tree node. (More cases need to be done.)
 
  - Remove some Ruby warning messages

December 10, 2010 (0.34)  Giant Madagascar Day Release

  - 1.9.2 patches: 
   * Save source string eval types
   * Add RubyVM::OS_ARGV and RubyVM::OS_STARTUP_DIR to allow Ruby
     programs to reliably restart themselves via exec().
   * Save instruction sequence compile options 

  - Add routines for finding instruction sequences and offsets:
      iseq#lines() iseq#find_iseq_with_line(), and 
      seq#locate_line_with_children() 

October 27, 2010 (0.33)
- Revise rvm install script to be more rooust
- Change bug report location so we don't spam Ruby's redmine 
- Add RubyVM::InstructionSequence#parent and #local_iseq fields

September 12 2010 (0.32)
-  First release on gemcutter