52nd Alpha Release
- +Fix unable to edit file extension associations on Linux systems (issue 745).
- +Fix issue with duplicated @ symbols inserted by generic completer (issue 743).
- +Fix some Unicode handling issues in log handler.
- +Fix bug in Tango art provider fallback code which could end up looking in
Default theme instead of Tango theme directory for mime icons.
- +Fix PyDeadObject errors related to failed destruction calls by AuiManger.