0.3

seo_tags  templatetag library has an issue. 

Please check : 
def _process_var_argument(self, context):
        if self.variable is None:
            return escape(getattr(seo, self.intent))
        else:
            context[self.variable] = getattr(seo, self.intent)
            return u''

Here seo is not defined. 
I want to fix this and also implement a support of social meta variables such as facebook and twitter.