Update changelog in perparation for 1.2 release.
Update changelog in perparation for 1.2 release.

jieter/django-localflavor,agustin380/django-localflavor,maisim/django-localflavor,django/django-localflavor,infoxchange/django-localflavor,rsalmaso/django-localflavor,thor/django-localflavor