Added ancient ambient processing function to pipeline.py. Differs from the function in acoustic_util.py in that it grabs files from the S3 bucket that match the date provided and updates a parquet file containing ancient ambient values for each date, vs just providing an ancient ambient value if given a dataframe.
Added broadband option to get_files.
Added unsigned option to file_connector.
To-do still:
Add documentation to ambient processing.
Add functions to convert between absolute and relative sound level.
To-do still: