Functionality changed or added
• Improved PDF metadata retrieval
• Items list performance improvements
•[Zotero for Firefox] New pref: “Open PDFs and other files within Firefox when possible”
•By default, with this option enabled, Zotero will open files using any browser plugins available in Firefox (e.g., PDF plugins). If this option is disabled, files such as PDFs will be opened via the operating system, even if a browser plugin is available.
•Useful for annotating files using an external program (e.g., OS X Preview, Acrobat Reader)
•Previously available only as a hidden pref (launchNonNativeFiles)
•Don't count items as duplicates if DOI/ISBN don't match or year is off by > 1
•Removed “Try to override conflicting shortcuts” pref
•Most Zotero shortcuts are active only in the Zotero pane, so overriding other Firefox shortcuts isn't necessary».