Changes in version 2.2 (2020-04-09)                   

    o   Updated to work for R version 4.0.  Fixed error message when
	there were few predictors

                  Changes in version 2.1 (2018-02-16)                   

    o   MST package published in Journal of Statistical Software.
	Added citation.

                  Changes in version 2.0 (2017-04-15)                   

    o   Changed input names (e.g., changed training to data and
	max.depth to maxdepth)

    o   Changed minevents to represent minimum number of observations
	needed to split in parent node (instead of in each child node))

    o   Changed input parameter cont.split to distinct

    o   Added weights and subset optional input parameters to MST()
	function

    o   Added accessor function getTree()

                  Changes in version 1.3 (2016-05-25)                   

    o   MST() now uses a formula

    o   Added stratified and independence logrank statistics

    o   Converted trees to a constparty object

                       Changes in version 1.0-1.2                       

    o   First CRAN release.

    o   Can construct trees using marginal, gamma frailty, or
	exponential frailty models