Librae / neurite - History

support config via mqtt

e.g.
mqtt publish -h accrete.org -t /neuro/neurite-000c1632/config/ssid -m 'linkgo.io'
mqtt publish -h accrete.org -t /neuro/neurite-000c1632/config/psk -m 'ilovelinkgo'
mqtt publish -h accrete.org -t /neuro/neurite-000c1632/config/topic_from -m '/neuro/chatroom'
mqtt publish -h accrete.org -t /neuro/neurite-000c1632/config/topic_to -m '/neuro/chatroom'
mqtt publish -h accrete.org -t /neuro/neurite-000c1632/reboot -m "1"

remove trivial functions like servo, adc

They are developed on separate branches.

In fact there is one critical issue comes from Servo lib:
Servo::attach() enables a timer, it may affect many other
unrelated functions, such as SPIFFS.exist?
So remove it on master branch decidedly...