LSL Multistream Viewer for Matlab r2020b+

Requires Signal Processing Toolbox and Matlab bindings for LSL added to path.

Python LMS launcher requires root directory of streaming script (MA_stream.py) to be added to path, and that directory needs to contain a venv with all the necessary packages installed.

Run lsl_multistream_viewer.m to open the app. If an issue arises and the app doesn't close, you can use close all force in the Matlab terminal.