I have just pushed DBM::Deep 0.99_03 to CPAN. This is the final candidate release before I release 1.00. Major changes are improvements in how transactions were done and freespace management. This should be the final step to software transactional memory for Perl. 
0.99_03 Jan 22 21:45:00 2007 EDT
    - THIS VERSION IS INCOMPATIBLE WITH FILES FROM ALL OTHER PRIOR VER
+SIONS.
      - The fileformat changed completely. I will be writing a convert
+er, but
        it's not there right now. Do NOT expect that this module will
        correctly detect older versions and handle them sanely. Sanity
+ will be
        there for 1.00, but we're not there yet, are we?
    - Converted to use FileHandle::Fmode to handle filehandle status c
+hecks
    - Fixed bug with deleting already-deleted items on Win32 (reported
+ by Nigel Sandever)
    - The guts of how transactions work has been rewritten to better h
+andle
      some edgecases. This required a complete rewrite of the engine.
    - Freespace management is now in place. It's not perfect, but it's
+ there.
    - The rewrite of the engine required a rewrite of how first_key/ne
+xt_key
      was implemented. This should result in significant speed improve
+ments.
    - Self-reference has been removed. This means you cannot do:
          $db->{foo} = { x => 'y' };
          $db->{bar} = $db->{foo};
      I hope to be able to return this functionality by 1.00, but I ca
+nnot
      promise anything. To do this properly, it requires refcounting i
+n order
      to correctly handle deletions and transactions. Once you move aw
+ay from
      a simple tree, everything becomes really hard.

[download]
My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to STM for Perl by dragonchild

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