новые иконки в OpenBoard

Clément Fauconnier dc3a159771 add Qt5Conccurrent.dll to dependencies		3 years ago
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OpenBoard.iss	add Qt5Conccurrent.dll to dependencies	3 years ago
release.win7.vc9.bat	using Qt 5.15.0 instead of 5.15.2 as a workaround for QTBUG-88309 (windows)	4 years ago