Simplify the introduction, and use if for DESCRIPTION
Move the function branches_attr_by_labels between two files
`branches_attr_by_clusters` and `branches_attr_by_labels` - moved from using NA to Inf.
Fix headers.
`branches_attr_by_labels` now uses `dendextend_options("warn")` to decide if to print that labels were coerced into character.
vignettes: moved to dend15 and dend13. Wrote:
* Setting a dendrogram's nodes/leaves (points)
* Setting a dendrogram's branches
color_branches - warn of missing k only if warn=TRUE
Vignettes: Writing "Changing a dendrogram’s structure"