Changes in version 1.3.4 (2020-03-25)                  

    o   Change default batch size to 500 in `mbkmeans`.

    o   Change default init_fraction to be the same as the batch size in `mbkmeans`.

                 Changes in version 1.3.3 (2020-03-12)                  

    o   Change to `blockApply` to compute labels.

                 Changes in version 1.3.2 (2020-02-04)                  

    o   Added option `compute_labels=TRUE` to optionally avoid computing labels and
	return only the centroids.

                 Changes in version 0.99.0 (2019-03-08)                 

    o   This is the pre-submission version.

    o   Change default in mbkmeans to use a batch size equal to 5% of the data.

    o   Change default in mbkmeans to max 100 iterations.

    o   Fix blocksize() to work if impossible to calculate available ram.