Notifications do not show on macOS

[TheLastProject]

Notifications are sent through the logger class by calling showMessage on the system tray:

Pext/pext/__main__.py

Lines 306 to 307 in 7c38150

	if Logger.window.tray:
	Logger.window.tray.tray.showMessage('Pext', message['message'], icon)

Yet somehow they are never shown on macOS, while they do work on Windows and Linux.

Related Qt5 feature: https://doc.qt.io/qt-5/qsystemtrayicon.html#showMessage