NF: Added additional ref test.
NF: Added ability to limit number of free key responses.
NF/BF: Fix kwarg error in Func state and add a Debug state.
NF: Add tracking of current time to Movie state.
DOC: Fix docstring for Pulse.
NF/BF: Can now set Ref vars.
NF: Log pulse_end_time, too
NF: Instead of logging, make responses available as var.
NF: Added ability to enter number keys in freekey.
NF: Added Debug state to init.
RF: Reduce default rise and fall time on beep.
BF: Fixed keypress duration error and affiliated freekey bug.
BF: Needed to reset base time in KeyPress on enter.
BF: Remove debugging info from keyboard and freekey.