instead of unlocking everything, remember current locks
also, allow to manually change locks in terminal

instead of flagging sync-in-progress, remember existing locks and
restore after it is done with processing

schedule when >0, execute immediately otherwise

`-mD` is not an option...

`-M -MF $file` can be used together with `-E` to generate a small
makefile-like generator (does not include any compiler flags!) for the
target file so we know which files it would use during compilation

amend b5a03dac72

amend b5a03dac72

another pin provider, similar to analogpin
instead of generating events, use last serial reading (with a timeout)

events and actions are exportable, internals are not
some internal classes that do not need init through ctor

and double-check that we really have magnitudes available
fix #2572

also queue fallback check instead of resolving it in the timer
resolve #2571

early init plus simple state switch w/ api

* dynamic relays should not overlap with configuration
* prefer explicit relay configuration vs. dynamic addition

resolve #2568

fix test case for 0b1... >32chars

allow to schedule pulse timer for the current status by disabling 'toggle' (bool)

amend 542188dd

resolve #2564

resolve #2563

amend b8921b9a89

* customize our multipliers. accuracy is a generic multiplier, mostly
  depends on the environment temperature (see datasheet). sensitivity is
  a ratio between the currently set mtreg value and the default
  e.g. for mtreg 31, sensitivity is .45; for mtreg 69, sensitivity is 1.
* non-blocking pre(); since we have tick(), just wait until the reading
  is available instead of stopping everything else in the sensor loop
* more specific error state when we are not ready to return a value

return half of raw value in both modes involving it
resolve #2550 (just for the sensor, no global setting yet)

ref. #2483, #2546 and #2554
instead of waiting for our time window, attempt to read & parse everything
discard unknown data more frequently, and attempt to store more data as well

resolve #2558
resolve #2559