message: spelling: the
diff: ram.py:
  A simple implementation of a history that maintains items in RAM. This is used for simplicity, but isn't exactly
  -robust nor persistent. Given that it is in thr RAM, it is driven from the decoders object, which should run off the
  +robust nor persistent. Given that it is in the RAM, it is driven from the decoders object, which should run off the
  middle-ware layer.
  Note: this RAM history treats "start times" as session tokens to remember where it was last fetched from.
  