CRUSH v1.0 - released 18th June 1994

  First version of CRUSH

CRUSH v1.1 - released 1st August 1994

  Bug fix for -f "optimiser" which sometimes prevented the very best archive
  being saved. Bug fix which cause CRUSH occasionally to overrun the required
  number of trials. Also a minor optimisation added to -f that almost always
  improves compression. v1.0 and v1.1 are completely cross-compatible and
  neither of the v1.0 bugs would cause invalid archives to be created.

CRUSH v1.2 - released 22nd August 1994

  Bug fix for -f when using CRUSH to create archives on a different drive
  than the current one. CRUSH v1.1 would report a invalid error and give up.
  Also when using CRUSH v1.1 to compress a group of zero-length files it
  would report a spurious percentage improvement. CRUSH no longer allows
  extension .CRU for external archive name (an invalid choice anyway).
  Extra optimisation added to -f when used with larger values (e.g. -f40).
  As before, all v1.0 and v1.1 archives are still valid and v1.2 compatible.

CRUSH v1.3 - released 5th November 1994

  Support for the new UC2 compressor added. UC2 outperforms ARJ and PKZIP
  for most applications. Bug fix for problem when searching very deep
  subdirectories.