Fixed bug in how the AC Amplitude from the Spectroscopic Values was sliced in AC Mode

Corrected passing of kwargs to calls to figure, ImageGrid, and plot_map

Cnms dev

Now uses the first entry in unique_waves to get the name for the pixel_data value.

Small updates to docstrings

Added method to allow for the specification of an existing Guess when calling the fit function.

Small updates to docstrings

Added method to allow for the specification of an existing Guess when calling the fit function.

Updated mock list

Loop parameter extraction added
Hopefully fixed documentation

New parameter, get_loop_parameters, added to doFit and doGuess
If true, the physical loop parameters will be calculated from the guess or fit before the method returns

Scan size taken from number of image files if not provided.

PEP8 cleanup

Adds loop parameters to existing axes from plot_loop_guess_fit

Now catching correct error type.