Automatically classifying journal articles
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Upgrade Storage
If somebody would be willing to have a look at this, that would be great.
https://blog.mozilla.org/addons/2015/08/21/the-future-of-developing-firefox-add-ons/
I don't know if that requires non-trivial changes but you should begin by updating install.rdf (and perhaps chrome.manifest) as it was done for example with another plugin, Zotero Maps (have a look there).