2.3.0

• Add input and output signatures to all ephys tasks
• Add datahandler to task to download and upload data based on location where task is run
• Spike sorting and EphysVideoSyncQc download data on local servers if not available
• brainbox.io.one load_spike_sorting_fast: bugfix returns acronyms
• creates sequence files for spikesorting
• GPU tasks have a lock - local data handler doesn't instantiate one