Be able to track bookmark based on document title

[chtenb]

Is your feature request related to a problem? Please describe. Some applications have a good document title which stays the same across updating content. It would be powerful to be able to utilize this, especially because on some sites there is no other way of telling which URLs belong together, e.g. because they used some hash-like URL. In those cases this extension cannot be used at the moment.

Describe the solution you'd like Either of the following solutions would work for me:

• Add a new additional configuration field (below the current "Regular Expression" field) that allows you to provide a regular expression for the document title, with the current document title as default. The two fields should be combined as follows: a webpage matches a bookmark whenever both regular expressions match the page.
• Add a checkbox which makes the bookmark track the document title in addition to the URL regex (default on).

Describe alternatives you've considered

• Use the first proposed solution, but leave the document title regex empty by default. But this decreases the usability of this feature because 1) the page title isn't easily copied and 2) not having to change anything to the default configuration is the most user-friendly. Moreover, I haven't been able to find cases in which the title contains unwanted variability where the default URL heuristic doesn't already have unwanted variability (and manual configuration would thus be necessary anyway).
• Add a checkbox which makes the bookmark track the document title in addition to the URL regex (default off).
• Add a checkbox which makes the bookmark track the document title instead of the URL regex (default on).
• Add a checkbox which makes the bookmark track the document title instead of the URL regex (default off).

Cool extension btw