1.4  14.02.2013
        - SEC, MIN, .., YEAR are now constant objects (read only) to avoid wrong usage

1.3  14.02.2013
        - add Storable hooks

1.2  12.02.2013
        - fix test for some more platforms

1.1  12.02.2013
        - fix test for some platforms

1.0  10.02.2013
        - first release