setup: bump to 0.5.2 (where was 0.5.1?)
setup: bump to 0.5.2 (where was 0.5.1?)

erikdejonge/django-htmlmin,Zowie/django-htmlmin,Alcolo47/django-htmlmin,argollo/django-htmlmin,argollo/django-htmlmin,Zowie/django-htmlmin,Alcolo47/django-htmlmin,erikdejonge/django-htmlmin,cobrateam/django-htmlmin,erikdejonge/django-htmlmin,cobrateam/django-htmlmin