advanced_image_processing: In the function preprocess_data, the internal variables for optional preprocessing steps were renamed to make it clear the preprocessing step may not have occurred. Also, renamed the internal variable name new_data_i_zero_mask_i_outline_interpolation to new_data_i_zero_mask_interpolation in removing_lines. This fixes issue #49.
advanced_image_processing: In the function preprocess_data, the internal variables for optional preprocessing steps were renamed to make it clear the preprocessing step may not have occurred. Also, renamed the internal variable name new_data_i_zero_mask_i_outline_interpolation to new_data_i_zero_mask_interpolation in removing_lines. This fixes issue #49.

DudLab/nanshe,nanshe-org/nanshe,DudLab/nanshe,nanshe-org/nanshe,jakirkham/nanshe,jakirkham/nanshe