148 separate emg outputs in hdf5 by dig in

[abuzarmahmood]

Update EMG pipeline to allow:

• Simpler handling of trial metadata (taste, laser) using dataframes
• Process emg data without chunking into tastes (simplifies code, and better handles uneven trials)

Includes output of a trial_info_frame which is human-readable, and contains all metadata associated with a trial.

[abuzarmahmood]

1. [x] Merge emg_plot_filt_env into emg_filter
2. [x] Update Readme to reflect new pipeline
3. [x] Update QDA gape classifier
4. [x] Update 'BSA execute` to match with new pipeline
5. [x] Update pipeline tests

[abuzarmahmood]

All tests passed