Missing mappable keys

[huaj1ng]

Hi magicien, it seems that several keys showing in the US keyboard layout, for example, [ and ], is not yet mappable in JoyKeyMapper. For detailed info on different key layouts it is convenient to check for example here. As it is convenient under that layout to set shift+command+[ or ] to work as a universal tab-switching shortcut, it would be really helpful if there's such a binding. Thank you!