Fix CCR Channel bug.
Merge remote-tracking branch 'oliverlee/gainschd' into gainschd
Minor optimization of negation operation.
Fix norm option in plot function in PlotData.

Don't changed stored data when using the norm option in plot.
Change default estimation and control thresholds.
Fix maximum steer angle threshold.
Fix expand_field function in PlotData.

Don't find additional fields unless the input field type has subfields.
Fix norm option in plot function in PlotData.

Don't divide by data magnitude if it is near zero.
Fix ylabel in plot function in PlotData.
Fix methods depending on kwargs in PlotData/Sample.
Change filter cutoff and whitespace cleanup.
Add function to plot Fourier transform in PlotSample.
Merge remote-tracking branch 'hazelnusse/gainschd' into gainschd