[pio-general] Pioneers 15.4 released

[Roland C. <rc...@us...>]

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Hello all,

I've released a new version of Pioneers.

Changes:
* New theme Nouvellia, by Brian Mansberger
* Fixed rendering issues in ccFlickr theme
* Improvements for the MinGW port
* Fix for #290: check for the winning condiation at the beginning of
the turn
* Fix for #285part2: Fixed unplayable development card
* Use the default about dialog
* Framework change: replaced glib-gettextize by intltool
* GTK+3 deprecation checks are turned off per default
* Minor code quality improvements

With kind regards,
Roland Clobus
Developer for Pioneers