Integrated a readout function for the position deadband. Also read from
the controller if the axis has dynamic limits and only poll the limits
repeatedly if that is the case. Lastly, added support for the velocity
mode (untested!).
A "normal" error reset should not trigger a node reset. However, this
option is still available via a dedicated PV xx:NodeReset and a
corresponding function in masterMacsAxis.
When a MasterMacs motor is powered for the first time, it does not have
a target set. Therefore, the targetReached bit is 0, which the driver
used to interpret as "moving". This is solved now by an additional flag
which checks if the motor did a handshake.
Additionally, the communication module was simplified and new utility
scripts were added. It is now made sure that the communication timeout
for enabling and sending move commands is now at least equal to
PowerCycleTimeout defined in src/masterMacsAxis.cpp.
