I was sure this is excellent extension. Till now. As without any explanation you (potentially) made it a new tool for spying users I decided to not upgrade it. I suggest to remove features which make necessary the newly requested permission. I definitely don't plan to allow for so wide access to my data.
Response to comments of people who explain that this is the same as in many other extensions:
Firstly, anyone concerned about privacy does not install extensions which needs so wide access to user data. Secondly, while some of extensions really do need this kind of permissions, THIS extension didn't - until now. If EFF has some new, better tool for us, then it can provide it as a new extension, so users can decide whether they want to sacrifice part of their privacy to have the tool.