Changes file for Statistics::RankCorrelation

0.11_3 Mon Dec 3 2007
    - Whoops. Needed require 5.006001;

0.11_2 Sun Dec 2 2007
    - Replaced my "restrictive formulation" of spearman() with Jon Schutz' "direct Pearson coefficient of the rank vectors" algorithm - and now spearman (almost) works!
    - Refactored the test a bit.

0.11_1 26 Mar 2007
    - Realized that the module does not compute correct results in the presence of tied ranks and updated POD accordingly.
    - Added a slew of TODO tests for tied ranks.

0.10  Sat Mar 24 2007
    - Added Kendall's tau.
    - Added data sorting.
    - Added size accessor.
    - Updated and improved documentation.
    - Enhanced the test script.

0.0901  Fri Aug 13 2004
    - Whoops.  Forgot to increment the number of known tests. :\

0.09  Fri Aug 13 2004
    - Removed the unnecessary pair_sort() function.
    - Replaced rgw rank() function with the code from Thomas Breslin.
    - Added a test for tied ranks. (How did I not do this before?!?)
    - Updated POD accordingly.

0.08  Wed Dec 30 2003
    - Made the object auto-initialize if given vectors and not die,
      if not.
    - Added a test for this "no-argument" constructor case.
    - Added eg/boolean_grids to show what the correlation_matrix()
      method does.

0.07  Wed Dec 30 2003
    - Added the missing pair sorting function and now this module
      works correctly.
    - Changed the functions that were documented as "private" to
      "handy".
    - Improved the documentation with concrete examples.

0.06  Mon Dec 15 2003
    * No functionality changes in the module itself.
    - Cleaned-up, repaired and smoothed out the documentation.
    - Added eg/permutations to facilitate "eyeball checking".
    - Added more cases to the test suite.

0.0502  Sun Sep 27 2003
    - The $VERSION should be an actual number and on its own line.
    - Cleaned up POD a tiny bit.
    - Reversed chrono-sort on this file.

0.05.1  Sun Sep 21 2003
    - Just cleaned up POD.  No functional changes made.

0.05  Wed Aug 6 2003
    - Fixed stupidity in POD.
    - Compressed average code in _rank().

0.04  Wed Aug 6 2003
    - Fixed and enhanced POD.
    - Removed the assignment from the *_data accessors.

0.03  Wed Aug 6 2003
    - IT ACTUALLY WORKS NOW.
    - Added x_* and y_* object attributes and accessors.
    - Compute the x and y ranks in _init().
    - Enhanced POD.
    - Made a proper 1.t script.

0.02  Mon Aug 4 2003
    - Renamed binary() to csim().
    - Added correlation_coefficient()
    - Added more SEE ALSO references.
    - Cleaned up and enhanced POD.

0.01  Sun Aug 3 13:31:57 2003
    - Created with Module::Husbandry.