новые иконки в OpenBoard

Clément Fauconnier aaba5780b6 added libxcb-xinerama0 to the needed dependencies (seems to be required by Qt5Gui)		4 years ago
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linux	added libxcb-xinerama0 to the needed dependencies (seems to be required by Qt5Gui)	4 years ago
osx	update release scripts with Qt 5.15.2 version (osx)	4 years ago
windows	updated release_scripts with Qt 5.15.2	4 years ago