http://wxdcgui.sourceforge.net/news-0.3.11.html
http://wxdcgui.sourceforge.net/news-0.3.14.html
http://wxdcgui.sourceforge.net/news-0.3.19.html
http://wxdcgui.sourceforge.net/news-0.3.20.html
http://wxdcgui.sourceforge.net/news-0.3.21.html
http://wxdcgui.sourceforge.net/news-0.3.22.html

Release notes were not made for every release,
there is also:

http://wxdcgui.sourceforge.net/releases.html
http://wxdcgui.sourceforge.net/history.html