Changes in version 0.2.0 (2015-02-12)                  

    o   `kselection` allows to inject a function that provides a different implementation of kmeans algorithm. This feature has developed thanks Harold Pimentel.

    o   `nstart` is not a parameter of `kselection` to facilitate compatibility with different implementations of kmeans algorithm.

    o   `kselection` allows the parallel execution of the algorithm using `foreach` package.

                 Changes in version 0.1.1 (2014-10-17)                  

    o   BREAKING CHANGE: Now the `trace`option in the `kselection` function shows a trace, the progres must be selected using the `progressBar` option.

    o   Add the possibility that `kselection` function display a trace of the progress.

    o   Fix the error which appears in `kselection` when the number of rows in the input data is lower than 15.