Fixed FretData use in fcalc.py
fplot.plotall() new figure() is duplicated in obj.plot()
experiment.Pulling: can override default plot title with kw
FIXED curvefit.Fit.plot() to process kwargs
Figure() sets size to standard when saving
fcalc.fromFile() return FretData object
fplot._subplot() now accepts hold kwarg. Also updated to be more object oriented.