Add CLI command for checking for updated news titles

[Frewacom]

Pages 101 and 102 contains a list of all news titles. By parsing and saving these to a file, we can implement a command that compares the saved titles with the current titles. If they have changed, the user can e.g. display a notification.

Example usage:

$ ttt update
No new news!

$ ttt update
1) Some news title [108]
2) ..

We could also have a flag for automatically creating the notification(s).