This changes the previous raw advertisement packets to structured
advertisement configuration. That means you can set the local name not
with a raw byte array but with a normal string.
While this departs a bit from the original low-level interface as is
often used on microcontroller BLE stacks, it is certainly easier to use
and better matches higher level APIs that are commonly provided by
general-purpose operating systems. If there is a need for raw BLE
packets (for baremetal systems only), this can easily be added in the
future.
The nrf51822 chip is still widely available, for example in the BBC
micro:bit. Therefore it's a good idea to support it too.
Unfortunately, Nordic decided to change the API in some significant ways
so many parts are not compatible between S110 for nrf51 and the other
nrf52* SoftDevices.
