 1.0rc3::
  The plug-in has been broken by backward incompatible changes to Moin's API in version 1.7. (I guess, the concept of backward compatibility is for wimps only ;-) ) Fortunately, SamMorris and AdamBregenzer have supplied patches to adapt the code to the new API - thanks a lot, guys!

  I have integrated their changes in a way that still preserves backward compatbility of the plug-in (checked against 1.3.4, 1.6.4 and 1.7.2).

  This required the addition of a "backward compatibility layer" in the shape of the python module {{{MoinLegacy.py}}}. The module must be accessible for {{{import MoinLegacy}}}. I usually put it in the Moin installation directory of my MoinDesktopEdition.

  The technique I've applied is "backward compatibility injection": Removed (and renamed) functions and methods are "injected" back again externally. The python module responsible for the injection is {{{umoin.MoinLegacy.py}}}. 
  It injects the functions upon import, and provides unified alias names for renamed modules. Currently, it only covers the part of the API that affects {{{MoinGraphViz}}} and {{{MoinAttachmentsDeletion}}}, but it should be extended it as required to make other plug-ins work.

  In addition, I have modified the way the Graph``Viz tools are accessed. The default implementation does not preset the tools' directory and file name suffix, but assumes (a) that the tools are on the PATH, and (b) that a suffix, if any, will be handled by the OS implicitly. This should work on both windows and *nix likewise. Note that a specific path and file name suffix can still be specified via configuration variables, it's just that they are now empty by default.

 1.0rc2::
  * integrated fixes and suggestions from the community (see the /Discussion page)
   * the suffix {{{.exe}}} is only used if {{{sys.platform == 'win32'}}} (and there's a preset that can be easily changed)
   * prepared to integrate the anonimous patch on the /Discussion page
   * $STD_GRAPH_HEADER now includes a statement {{{graph [ charset="utf-8" ]}}}
  * generelized the cleanup action to work in contexts other then "GraphVizCleanup"
    (on its way to a general attachment cleanup service)

 1.0rc1:: initial public release
