version 0.3   1/21/2001

    Added new command-line arguments "max_iter" and "halt_sigma",
    which allow user to control the number of iterations of
    the main program loop.  This allows the user to terminate
    the search for solutions when the residuals drop to a particular
    level, for example.

    Fixed small bug in "selftest.pl" script which caused the test
    of "id1" and "id2" options to fail.    MWR 10/29/2000

version 0.2   7/30/2000

    Added "id1=" and "id2=" options so that user-assigned ID numbers may
    optionally be used throughout program and kept in output files.


version 0.1   6/14/2000

    Initial release of the package.  Includes the workhorse program
    "match", plus a pre-processor (project_coords) and a post-processor
    (apply_match).  

    It would be nice to modify the pre-processor to handle (RA, Dec)
    coordinates expressed either in decimal degrees (in current version),
    or in sexigesimal notation.

    The regression test "selftest.pl" tests only the "match" program.
    There are no regression tests for "project_coords" or "apply_match".