• package now downloads and installs much faster
  
• reduced distribution size by 80%
  -- pruned extensive NIST vectors to a useful subset
  -- still possible to test all vectors if desired
  --- see "t/nist/COPYRIGHT" file for details
  
• added routines to provide persistent storage of SHA states
  -- shadump() and shaload()
  
• reduced runtime of large bitstring tests (gillogly-hard)
  -- illustrates usefulness of shadump()/shaload()