Starting process of merging in Eric's new Fragment creation scheme:

Fragment
  findCalc.m:  updated
  Fragment.m:
        defaultConfig() removed
        Fragment() constructor removed
  initializeZipData.m:  substantial re-write
  loadZipData.m: substantial re-write
  opt_geom.m:   new file
  runFragment.m:  new file

new classes:
  Zatom
  ZMatrix