Version 1.0-2
    o Other very tiny changes in the documentation. Bug hapenning with the command example(cna) fixed.
Version 1.0-1
    o Very tiny changes in the documentation from version 1.0-0.
Version 1.0-0
    o Release version, replacing the pre-release version 0.1-3. The documentation is now completed and the condition function works also with data frame arguments.

