seed data records manipulation library

 Provides a framework for manipulation of SEED (Standard for the Exchange
 of Earthquake Data) data records.
 .
 Functionality is also included for managing waveform data as continuous
 traces. All structures of seed 2.4 data records are supported with the
 following exceptions: Blockette 2000 opaque data which has an unknown
 data structure by definition and Blockette 405.