Sort default extensions alphabetically
Sort default extensions alphabetically

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