Revision history for Set-Formula

0.01    2013/01
        First version, released on an unsuspecting world.

0.02    2013/01
        1. Prefix "_" added to private subroutiones.
        2. POD enhanced for all exported subroutines, that appear after =head2 now.
        These changed have been done for conformity with Pod::Coverage, that is used in pod-coverage.t

0.03    2013/01
        Description improved

0.04    2013/04
        Description improved
