3.26.0
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* Add description of GNOM and GVDB to programming guidlines (Philip Withnall)
* Add a fullscreen mode pattern to the HIG (Allan Day)
* Improvements to platform demos (David King, Sebastian Rasmussen)
* HIG-compliant applications may run without open windows (Allan Day)
* Updated translations:
  ca      (Jordi Mas)
  cs      (Marek Černocký)