code: def add_all_filters(pelican):
      
      pelican.env.filters.update({'datetime': filters.datetime})
      pelican.env.filters.update({'article_date': filters.article_date})
      pelican.env.filters.update({'breaking_spaces': filters.breaking_spaces})
      pelican.env.filters.update({'titlecase': filters.titlecase})
docs: Add (register) all filters to Pelican.