Also turned plotting back on by default (the change doesn't affect
command line usage).
GNUFIT_DATA_BASE='./calibrate_cantilever_fitdata'
TEXT_VERBOSE = True # for debugging
GNUPLOT_VERBOSE = True # turn on fit check plotting
-PYLAB_VERBOSE = False # turn on plotting
+PYLAB_VERBOSE = True # turn on plotting
PYLAB_INTERACTIVE = True # select between draw() and show() for flushing plots
BASE_FIGNUM = 20 # to avoid writing to already existing figures