Revision history for Statistics-Sequences-Pot-0.06

0.06
        + NOT compatible with earlier versions
        + add discrete methods for descriptives - observed, expected, variance, obsdev, stdev
        + add stats_hash() method
        + less cumbrous "dump"
        + add specfic call for returning zscore
        + support giving data for each descriptive rather than loading for all
        + no more "perform_pot_test" alias to "test"
        + no "full" arg to test() - calls bunches and spaces by method
        + no caching of descriptives within class object

[See Statistics::Sequences for earlier changes]