Overview of Changes in gtkhtml2 2.6.3
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* Fix large memory leak [Kjartan Maraas]
* Use xmlSAX2 API instead of deprecated SAXv1 API (bug #164808) [Rodney Dawes]
* Use gnome-common in autogen.sh [Rodney Dawes]
* Return NULL at end of non-void function (bug #165455) [Chris Lahey]
* Use g_print instead of g_warning (bug #163071) [Pawel Sawek]
* Miscellaneous bug fixes (bug #151005) [Kjartan Maraas]
* Miscellaneous bug fixes [Peter Williams]
* Miscellaneous bug fixes (bugs #143502, #156582, #157328, #157330, #160704)
  [Padraig O'Briain]