How to copy with cp to include hidden files and hidden directories and their contents?

bash itself has a good solution, it has a shell option, You can cp, mv and so on.:

shopt -s dotglob # for considering dot files (turn on dot files)

and

shopt -u dotglob # for don't considering dot files (turn off dot files)

above solution standards of bash

NOTE:

shopt # without argument show status of all shell options
-u # abbrivation of unset 
-s # abbrivation of set