Improved kmeans

[astamm]

I added functionalities to the kmeans_align() function. Specifically:

• it gains the argument use_verbose which allows the user to suppress information displayed in the console;
• it includes a numeric vector storing the distances to corresponding center for each curve in the output;
• it is now possible to use the medoid as centroid type as an alternative to the mean; the medoid is the most central curve among the existing curves.

These are important features for my fdacluster package. Would it be possible to prepare a v2.0.1 CRAN release please so that I can also release fdacluster? Thanks.

[jdtuck]

Thanks and yes once merge I will work on getting another release out