Note that for the very CPU this driver is used with (nRF52 on the
microbit-v2 board), this currently needs extra workarounds to copy
written data from flash to RAM so that the driver can see it. (Otherwise
it silently writes 00, and then correctly reads 00 from the bus all the
time).
The change in 399e25cc was did not have the intended effect: As the
local crates still all defined 0.7 as the riot-wrappers version, that
dependency was actually down- rather than upgraded, and thus did not
effect the stabilizations.
