2.3.15:
* Added optional starting_folder_uri parameter, to use,
for instance, when opening an examples folder.
convenience method.
* g++ 4.01 build fixes.
* Translations: Added Ukranian (Maxim Dziumanenko),
Greek (Kostas Papadimas), Chinese (Taiwan) (Chao-Hsiung Liao),
Chinese (China) (Funda Wang), British English (Christopher Orr),
Spanish (Francisco Javier F. Serrador),
Brazilian Portugese (Raphael Higino),
Canadian English (Adam Weinberger), Kinyarwanda (Steve Murphy),
Norwegian (Marcel Telka)