0.0202
    sorry Simo::Util::err change very much.
0.0201
    Experimenta version release

0.01_04
    add err function

0.01_03
    delete use Simo::Constrain;

0.01_02
    add Build.PL requires Simo::Constrain, Simo::Wrapper
    fix @EXPORT -> @EXPORT_OK
    
0.01_01
    First developer Release

