[update 2.0] #20259

20259
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Issue 6567: fonts and LazyListMorph
        http://code.google.com/p/pharo/issues/detail?id=6567
       
Issue 6580: Making RPackage and PackageInfo polymorphic for migration
        http://code.google.com/p/pharo/issues/detail?id=6580
       
Issue 6581: New Spec version
        http://code.google.com/p/pharo/issues/detail?id=6581



--
Marcus Denker -- http://marcusdenker.de