new_contents: from comics.aggregator.crawler import CrawlerBase, CrawlerResult
  from comics.meta.base import MetaBase
  
  class Meta(MetaBase):
      name = 'The Chalkboard Manifesto'
      language = 'en'
      url = 'http://www.chalkboardmanifesto.com/'
      start_date = '2005-05-01'
      rights = 'Shawn McDonald'
  
  class Crawler(CrawlerBase):
      history_capable_days = 40
      schedule = 'Mo,We,Fr'
  
      def crawl(self, pub_date):
          feed = self.parse_feed('http://feeds2.feedburner.com/TheChalkboardManifesto?format=atom')
          for entry in feed.all():
              title = entry.summary.text('h1')
  
              if pub_date.strftime('%m/%d/%y') not in title:
                  continue
  
              url = entry.summary.src('img[src*="chalkboardmanifesto.com"]')
              title = entry.title
              return CrawlerResult(url, title)
  
subject: Add thechalkboardmanifesto crawler