Accelerated Visibility-Graph-Based Peak detector

[taulokoka]

Dear NeuroKit,

the visibility graph method you have included in your package (koka2022) has been recently updated (https://ieeexplore.ieee.org/document/10290007) and is being maintained at https://github.com/JonasEmrich/vg-beat-detectors. It would be appreciated, if you could update the method since the recent version is orders of magnitude faster than the previous, while providing better results.

Best regards, Taulant Koka