Todo:

• prepare a list of articles to be checked:
  • get the list of most popular articles
  • get the list of most recent articles
  • get the list of articles not older than two days
• obtain the content each article in the list
• store the content, compare with current one if already present
• on finding differences, flag it as changed
• store the info about changes to a file
• generate pretty diff and tweet the changes

Inspire by https://github.com/j-e-d/NYTdif