Tagging wxPython 3.0.0.0

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75440 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Tagging wxPython 3.0.0.0

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75441 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Set revision for externals for wxPython 3.0.0.0

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75442 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775