Min / max change feature

[tibor]

I think it would be good to track and tweet only articles when there was a minimum or maximum of changes:

• Small changes are often edits because of typos / styleguide or
• Very large changes are often made because the article has been fetched and auto published from a news agency and edited afterwards.

Also a “heatmap” feature would be interesting: not only looking for the amount of changes in the whole article but in the part where the changes have been made (paragraph, heading)

This way it would also be easier to generate smaller captures like mentioned in #34 because we would know which parts of the article have the most relevant changes.