Update HISTORY.rst with v1.6.0 release date and name
Update HISTORY.rst with v1.6.0 release date and name

luzfcb/cookiecutter,michaeljoseph/cookiecutter,luzfcb/cookiecutter,pjbull/cookiecutter,audreyr/cookiecutter,hackebrot/cookiecutter,hackebrot/cookiecutter,dajose/cookiecutter,audreyr/cookiecutter,dajose/cookiecutter,pjbull/cookiecutter,michaeljoseph/cookiecutter