Use qrt signal to identify quartets, find pattern if it doesn't.
  Fail over to HMS helicity signals if SHMS not found
  Add pcheck and cycle global vars (for fine tuning frequency)
  Start a helicity scaler class.  Just compares seeds for now.

  Previously the helicity code was not always setting the actual
  helicity.  It would then just use the helicity from the last event.
  This was almost always OK.  With this change, the helicity (T.helicity.hel)
  should be always defined.
  It is now sufficient to use just this variable when sorting events into
  plus and minus helicity.  The helicity value will be zero if the event
  occured during the settle period, or if the helicity decoder has not
  got enough data to have a seed.

- removed spdlog ( now in analyzer)
- added logging to THaAnalzyer (podd)

- Mixins defined in Logger.h
- Mixin used in base classes (THcDC is currently a good example)

Added a few more spdlog loggers

Added logging to many.

- Added logging to hodoscope, aerogel hitlist and detectormap
- Working on scandalizer features.

Added logging.

Added more logging.

added more logging.

More logging.

Undoes delayed helicity reporting by learning seed of pseudo random
sequence used by injector helicity electronics.

This detector class should be added to the Trigger apparatus.
Delivers the global variables "hel" and "helrep".  "helrep" is the
reported delayed helicity and "hel" is the actual helicity.  + and -
helicity are reported as +1 and -1.  If the event is during a MPS
settling period, then the helicity variables are zero.  For the first
few seconds of a run, the "hel" variable will be zero as the pseudo
random sequence seed has not been determined.  (If the trigger class
is "T" and this detector is called "helicity", then these variables
will be T.helicity.hel and T.helicity.helrep.

By default, it is assumed that there is delayed reporting of 8 cycles
and that Quartets are used.  If delayed helicity reporting is not in
use, then set the parameter "helicity_delay" to zero.