Added support for adding items to marking menus, and documented the optional keyword arguments.
Added support for adding items to marking menus, and documented the optional keyword arguments.

AlanZatarain/cortex-vfx,tectronics/cortex-vfx,AlanZatarain/cortex-vfx,tectronics/cortex-vfx,tectronics/cortex-vfx,AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,Alwnikrotikz/cortex-vfx,Alwnikrotikz/cortex-vfx