more gears
more gears

with consumer vehicles now routinely having 8-speed gearboxes, gear_lever_position should go at least up to eighth, and maybe to be on the safe side even up to tenth. transmission_gear_position already went up to eighth, but for consistency it now also goes all the way up to tenth.
openxc/openxc-message-format,mgiannikouris/openxc-message-format,openxc/openxc-message-format,mgiannikouris/openxc-message-format,mgiannikouris/openxc-message-format,openxc/openxc-message-format,mgiannikouris/openxc-message-format