More wx.PySimpleApp —> wx.App migrations

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@75609 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix virtual catcher for EndEdit.
Fix ownership transfer for wxGridCellAttr.SetEditor and SetRenderer.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@75610 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
The rest of PR 36.  Loop optimizations in ListRowHighlighter.RefreshRows.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@75611 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Use the panel for the combo ctrl’s parent.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@75612 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
PR 46: Fix print statements for Py3

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@75613 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775