* Use cp instead of rsync to copy directories
Since rsync is not installed on every host it's better to use standard tools.
Previosly rsync was introduced ( #1072 ) to enable copying of subdirectories, but
this is doable with cp as well.
* Throw an exception if copy_dirs entries end with a slash
* Fix to strip last directory name from the destination folder
* Update CHANGELOG.md
Co-authored-by: Anton Medvedev <anton@medv.io>