Fixed PyCBC TimeSeries conversion
This PR removes unnecessary copies of the TimeSeriesBase.{to,from}_pycbc methods present in the TimeSeries class, and fixes the properties used to extract metadata from the pycbc.types.TimeSeries object.
This PR removes unnecessary copies of the TimeSeriesBase.{to,from}_pycbc methods present in the TimeSeries class, and fixes the properties used to extract metadata from the pycbc.types.TimeSeries object.