While Mozilla firefox developer edition is great for testing my code, there is one problem: I can't read clipboard. While it is understandable that the lack of this feature is out of concern for the average user, I believe it should be optional and turn off by default. then, in the option menu, there could be a switch that enables it. Or, you could add an alert on the left side of the address bar to tell the user that the site wants to read your clipboard.
As it is now, this is incredibly unconventional for a developer, thus I believe it should be added as soon as possible because firefox developer edition is meant for developers, thus it shouldn't lack basic features.