2012-06-26

  File compression using zlib during reading and writing.

  A new output file is compressed as a whole when its filename
  terminates with .gz (gzip-comression) or .Z (zlib-compression).

  A read-only input file is automatically decompressed when its filename 
  terminates with .gz or .Z

2012-07-03

  EdfMaxValLen and EdfMaxLinLen increased to 2048 and 1023 to allow
  writing of very long lines used by the ESRF beamline control unit.
  Header lines (especially history lines) that are longer than 
  512 bytes (the previously used EdfMaxValLen), will be truncated at 
  512 bytes when read with older versions.
