added a minor test for dendextend_get_branches_heights - checking the function directly through the options.
When comparing to dendextendRcpp - added condition to not make the check if the package is not loaded and in the search path (this way I could compare the tests with and without the dendextendRcpp package).
assign_dendextend_options - we now pass all functions that have a Rcpp equivalent through "options". While this adds a bit of an overhead (sadly), it still gets a much faster speed gain, and without verious warnings that CRAN checks would not like.

Now added: dendextend_get_branches_heights, dendextend_heights_per_k.dendrogram, dendextend_cut_lower_fun - and gave speed tests in the DOCS.
Added a compressed version of the pdf tutorial.
Bump to version 0.13.0

(and updated DESCRIPTION)