Version 1.4.0

• Fix handling of warnings through the logger (#243 by Mathieu Scheltienne)

• Fix handling of CLI arguments through PlayerLSL entry-point (#246, #267 by Mathieu Scheltienne)

• Change default download directory for the datasets from ~/mne_data/MNE-LSL to ~/mne_data/MNE-LSL-data to match other MNE datasets (#256 by Mathieu Scheltienne)

• Add example for a simple QRS R-peak detector (#256 by Mathieu Scheltienne)

• Add example for real-time rolling windows bandpower estimation (#279 by Mathieu Scheltienne)

• Fix push operation by a PlayerLSL with a chunk_size set to 1 to use mne_lsl.lsl.StreamOutlet.push_sample() instead of mne_lsl.lsl.StreamOutlet.push_chunk() (#257 by Mathieu Scheltienne)

• Add example of PlayerLSL run in a child process (#267 by Mathieu Scheltienne)

• Fix error in pushing the last chunk of a non infinite PlayerLSL stream with chunk_size=1 (#268 by Mathieu Scheltienne)

• Add method acquire() to manually acquire new samples in the buffer (#282 by Mathieu Scheltienne)

API changes

• The PlayerLSL default chunk_size is now set to 10 instead of 64 samples (#264 by Mathieu Scheltienne)

• The Player and Stream objects now use a concurrent.futures.ThreadPoolExecutor instead of single-use threads (#264 by Mathieu Scheltienne)

• Improve the y-scaling on the legacy Viewer by (1) adding new y_scale values in the dropdown list in power of 10s and (2) adding mouse wheel scrolling base zoom in/out on the main plot window (#264275 by Mathieu Scheltienne)

• In PlayerLSL and StreamLSL, instantiation now uses keyword-only arguments for arguments specific to LSL (#282 by Mathieu Scheltienne)

Infrastructure

• Improve unit tests by (1) using a chunk_size of 200 samples in players, (2) running players in a separate process, (3) ensuring concurrent threads are not limited by one thread hogging the limited CI resources (#264 by Mathieu Scheltienne)