[To the Moderators: please do not delete this review, as it might be important for other users]
...the official way to get changes into an Addon is the support site, I already raised this bug for you: https://www.mozdev.org/bugs/show_bug.cgi?id=25931
once you (or any other user) vote for or comment or add their CC on the bug I will upload the version with that feature. New features go through Bugzilla and are attached to the bug for testing; if you want a feature that cuts me off from funding the least you can do is test it.
The change log doesn't open up RANDOMLY. It happens only when QuickPasswords is updated, so you would have seen the version history exactly FOUR times or less in 2014 (November 17, December 16, April 25 and April 13). I think this is fair, as the software makes a modification to your system and full disclosure of this is important. Like all Firefox Add-ons, QuickPasswords runs with privileged rights so it would have full access to your system.
You have complained about it SIX TIMES now; you should have seen the screen ONE time since December 16. If you use QuickPasswords for a whole year and have seen the version history tab more than 4 times, then please raise a separate BUG so I can FIX it. It is not by design when you see the version tab outside of an update.
There is no need to "get angry" about me storing the version number in extensions.quickpasswords.version because the addon needs to know whether it was updated in order to NOT display the version hints when you load it again and in order not to do any update / tidy up actions. It also needs to know that it wasn't installed freshly because then it would display the welcome page with a description on how to use it.
Once you DELETE or MODIFY extensions.quickpasswords.version YOU ARE ACTUALLY CAUSING THE PROBLEM your are COMPLAINING about The version history is ONLY SHOWN ON UPDATE.. A lot of Add-ons (*) store their current version number for precisely that reason. The reason for storing it is to show the correct version log precisely ONE time.
(*) a lazy search in my about config returns at least: Colorzilla, Zombie Keys, Adblock Plus, Down Them All, extension test, FEBE, IETab2, Image Zoom, Lazarus, Saved Passwords Editor, Tabmix Plus, unMHT, NoScript, New Addon Bar - these all store their current version number, in order to avoid displaying invalid information on startup
Once somebody is interested in the bug fix I will upload a version for everybody - make sure to *add* the new setting *before* restarting Fx then you won't see the version log (which ironically will describe the new setting). Good luck with 100+ Addons...https://www.mozdev.org/bugs/show_bug.cgi?id=25931
PS: there is also a newer version of QuickPasswords here https://www.mozdev.org/bugs/show_bug.cgi?id=25935 which also inludes the change from [Bug 25931]. I would prefer if people left some feedback at [Bug 25931] as I really don't know whether you are the only one who feels that strongly about displaying change logs.