16 May 2013 - v0.07
    * Perl value serializer can now handle typeglobs
    * Opening additional code windows now works
    * Untrapped exceptions are now caught and shown in the GUI
    * Added trace/follow mode

4 Apr 2013 - v0.06
    * Hover-over-variable works for hash and array elements, and for (most)
      Perl special variables.
    * User is notified immediately after a fork(), rather than waiting until
      after the next user interaction
    * Fix for code pane rendering in Firefox

26 Mar 2013 - v0.05
    * When the debugged program forks, the user is notified and given the
      option to debug the child process in another window
    * Breakpoints can be saved and restored

21 Mar 2013 - v0.04
    * New breakpoint list view
    * Breakpoints and actions can be marked inactive without removing them

16 Mar 2013 - v0.03
    * Fix a bug where clicking on a line number would not set a breakpoint
    * Code panes are rendered smaller to fit more on the screen

15 Mar 2013 - v0.02
    * Hover over a variable to see its value.  Works for all stack frames.
    * Currently executing sub and its args are shown at the top of the code
    * The PerlValue serializer can now handle Regexp refs

9 Mar 2013 - v0.01
    * First Release
    * Single step, step over, step out, continue
    * Watch expressions