Maintainance release

Description

This release introduces a simple GUI with the function plot_components_GUI.m for viewing the extracted components. It also fixes the following minor issues:

• update_spatial_components in the demo file now also gives C as an output to fix a dimensionality mismatch bug occurring when spatial components were being removed because they were empty/too small.
• get_noise_fft suppresses a warning signal occurring when the length of the traces was an odd number.

Contributors

@urslu and @fabiansinz for bug fixing and @agiovann for GUI implementation