1. EEG-level feature export. 2. New features loadable, elapsed, extract_datasetinfo2. 3. Notch filter. 4. Clear_results

Created by: janbrogger

Added new CTAP_export_features2 to export study-level features (not just segments) Added new feature CTAP_check_file_loadable. Creates ~projectroot/features/loadable Added new feature for timing: CTAP_clock_start and CTAP_clock_stop . Creates ~projectroot/features/elapsed Added new feature CTAP_extract_dataset_info2 - EEG file level descriptives Added new filter CTAP_fir_notchfilter (easier to document and use than two calls to CTAP_fir_filter) Added utility function CTAP_clear_results - deletes all logs, results, features (for use during development) Modified ctap_auto_config so that it doesn't overwrite path specifications (if they are set before call to ctap_auto_config) Modified gather_measurement_metadata to output a segment for the whole segment, for use with study level features. Does not impact existing code.