• Fixed database upgrade error if a 4.0.7 database was run in 4.0-4.0.6 and then opened in 4.0.7

• Improved import performance
• Added a WebDAV verification step to ensure 404 on missing files
• Added default values for some translator hidden prefs

• [Standalone] Fixed compatibility with authenticated proxies
• Fixed removal of groups during sync
  • Recently removed groups should disappear within a few days
• UI didn't update when adding/removing colored tags in search modes
• Fixed “Display character encoding on export” checkbox in prefs
• Fixed file sync error with overly solicitous WebDAV servers (since 4.0.6)
• Daily translator/style check didn't trigger immediately after startup
• Fixed potential file sync errors in libraries without file editing access
• Miscellaneous bibliographic output and word processor integration fixes
  • Updated citeproc-js to 1.0.460
• Fixed “Delete reconciliation unimplemented for searches” sync error
• Fixed error in console when no results from regexp search

• Autocomplete for tags, fields, and creators is now limited to the current library
• BibTeX files downloaded from websites are now imported automatically (if served as text/x-bibtex or application/x-bibtex)
• Increased maximum note length in middle pane to 120 characters
• Shift-Enter in creator field now uses existing creator type for new creator, like ”+” button

• Fixed syncing of relative paths
  • Clear and reassign a base directory to trigger syncing of existing relative paths
• Fixed file downloads on WebDAV servers that don't return a Last-Modified header (box.com, cloudme.com)
• Changed WebDAV 'lastsync' files to 'lastsync.txt' for better server compatibility
• Errors on some file sync requests could hang sync progress
• Fixed UI update when adding/removing colored tags in search modes
• Fixed attaching of files with very long filenames
• Fixed saving of PDFs open in pdf.js
• Favor top frame when saving from sites using frames
• Fixed “attachments is undefined” save error
• Download progress window never disappeared if the snapshot pref was disabled in Zotero Standalone
• Improved parsing of attachment paths/filenames in RIS files
• Allow ”%” character in attachment filenames
• Fixed cut-off document preferences window on first use
• Updated citeproc-js to 1.0.451
• Fixed some styles (e.g., AGM SIG-CHI Proceedings) in RTF Scan

• Add about:memory button to Standalone

• Added icons to context menus on Windows and Linux
• Added automatic handling of renamed CSL files

• Some file sync errors weren't being caught and displayed
• Fixed “Source item for keyed source doesn't exist” sync error
• Better handle some file sync file access errors
• Don't deselect tags in tag selector unnecessarily
• Colored tags weren't shown in collections with no other tags
• Fixed syncing error when switching between Zotero File Storage and WebDAV
• Display note title even if first line is just an opening HTML tag
• Fixed <div> appearing in some notes instead of <p>
• Fixed incorrect creator add/delete button behavior when removing an unsaved creator row
• Fixed Attachment Content regexp search
• Updated citeproc-js to 1.0.450

• Allow attachments to be saved using relative URLs

• Fixed lookup of <8-digit PMIDs
• Fixed abbreviation of single word journal titles
• Fixed “this.get(…).then is not a function” word processor integration error
• Fixed tag-related sync error
• Fixed character encoding (including window title) of Timeline view
• Clarified error message for login manager access failure in Firefox

• Fixed repeated auto-syncing
• Fixed automatic title abbreviation for new installs
• Fixed formatting for bibliographies created via drag-and-drop or Quick Copy
• Fixed saving of relative attachment paths with extended characters
• Fixed various potential file sync errors
• Fixed installation from disk of CSL files with byte order marks
• Recognize container-title-short as journal abbreviation
• Updated to citeproc-js 1.0.446
• Fixed reference test pane
• Avoid some warnings in Error Console

4.0.2 was released for Zotero for Firefox only.

• Fixed setting of relative attachment path

• Fixed tag colors window in Chinese locale
• Fixed editor in word processor integration classic view
• Fixed various issues involving edit bibliography dialog
• Avoid false positives for metadata retrieval for PDFs containing many consecutive underscores
• Updated citeproc-js to 1.0.443

4.0 Final will be released only on the Mozilla Add-ons site.

• Fixed appearance of preferences window in some locales

• Use of journal abbreviations can now be configured on a per-document basis
  • Option moved from Zotero preferences to document preferences
  • Disabled by default for existing documents, but enabled by default for new documents
• Default on-demand file download to off
• Disable warning if opening snapshots with annotations/highlights in more than one window

• Fixed WebDAV file purging
  • Deleted files are now purged from the WebDAV server at the end of every sync
  • Orphaned files are purged every 10 days
• Miscellaneous bibliographic output and word processor integration fixes
  • Updated citeproc-js to 1.0.442
• Fixed WebDAV file sync conflict error
• Fixed a bug affecting proxy-by-port EZProxy connections
• Clarified failed CSL validation error message

• New ConcurrentCaller object: run a fixed number of concurrent async functions

• Firefox 20 compatibility
  • Firefox 17 or later is now required
• Tag colors
  • Colors can be assigned to up to 6 colors per library by right-clicking on a tag in the tag selector
  • Tags with colors assigned will show up at the top of the tag selector and can be added to (and removed from) selected items by pressing the 1-6 keys on the keyboard
  • Assigned tags will show up as color swatches next to an item's title in the middle pane
  • Colors are synced to other computers
• On-demand download support
  • Can choose to download files at sync time or automatically when opened
  • Once a file has been downloaded, new versions will be downloaded and uploaded at sync time
• Relative path support for linked files
  • A base directory can be configured in the Advanced pane of the Zotero preferences
  • Linked file attachments stored within the base directory will be referenced using relative paths, allowing the files to be accessed on different computers as long as the file structure within the base directory remains the same
• Automatic style updating for all installed styles
  • Zotero will check for style updates once a day
  • Currently limited to styles available in the Zotero Style Repository
• Automatic journal abbreviation support
  • When enabled, journal abbreviations are used automatically when citing
  • Currently supports MEDLINE abbreviations
  • Disabled by default for old documents, but enabled by default for new documents; can be configured in document preferences
• PDF metadata retrieval improvements
  • Look for ISBN numbers
  • Better prevention of Google Scholar lockouts
• ”# of Attachments” column is now two separate columns
  • A blue dot now shows if an item has a file attachment; if the file doesn't exist locally (e.g., because of on-demand download), the blue dot is empty in the center
  • A separate column (off by default) now shows the number of child notes
• Additional item fields are now available as columns in middle pane
• Multiple-identifier lookup support in Add Item by Identifier
  • Pasting multiple lines of text converts the text field into a multi-line text box, as does Shift-Return/Enter
  • Shift-Enter/Shift-Return submits input in multi-line mode
• Multiple newline-separated creators and tags can be added at once
  • Paste newline-separated list into creator or tag field
  • For tags, pasting a newline-separated list or pressing Shift-Enter/Shift-Return changes the input field into a multi-line text box; press Shift-Enter/Shift-Return to submit (not yet implemented for creators)
• Tag entry box improvements
  • Tags can now be created/removed via the keyboard
  • Single-tag entry is much faster
• Added “Delete Collection and Items” context-menu option for collections
• Import from Clipboard now imports into the current collection instead of creating a new collection
• Date parts indicator now matches order in entered date
• Improved saving notifications
  • Show name of target library
  • Show attachment download status
• Rewritten file-syncing architecture
  • File syncing now occurs separately for each library, so a file sync error (such as a storage quota error) in one library no longer interrupts file syncing in other libraries
  • More accurate progress meter
  • Download progress for individual files is now shown in the middle pane
• Added additional field in Quick Format dialog showing the name of the library and providing a link to the item
• Duplicate detection improvements
• Updated various UI strings
• Various performance improvements
• Sorting changes
  • Don't sort Year column by full date
  • Sort by title after creator and date, if not primary sort (including for notes, which have neither a creator nor a date)
  • For secondary/tertiary sort, use Year instead of Date if Year column is present and Date column is not
  • Use Date Added rather than Date Modified for final fallback sort to preserve item position after edits
  • Sort empty titles last when title isn't primary sort
• Validate CSL styles on installation
• Support for parsing PMIDs and PMCIDs from Extra field for use in citation styles
  • Will allow creation of styles that include PubMed IDs or URLs
  • Format is “PMID: [number]” and “PMCID: [number]”
  • Extra field is already used by existing translators
  • This is a temporary measure until dedicated fields are available.
• New context-menu option to swap creator first/last names
• [Zotero for Firefox] Icon is now a proper add-on bar icon
  • Can be moved/removed via Firefox “Customize…” window as well as via Zotero prefs
  • The icon can be in the toolbar or in the add-on bar, but not both (since it is now the same button)
• Only show annotation toolbar on pages that already have annotations
• Quit rather than restart when changing data directory to allow for moving of data
• Show startup errors in the alert itself
• Don't shorten URLs in reports
• The “Advanced” preference pane has been separated into two tabs, “General” and “Files and Folders”
• Filenames are no longer Base64-encoded in ZIP files uploaded to WebDAV servers
• [Zotero for Firefox] New -ZoteroPaneOpen command line argument to open Zotero pane automatically on Firefox startup

• Imported latest localizations from Transifex
• Localized most unlocalized strings
• RTL support in notes
  • The note editor now defaults to the directionality of the current locale, with a button to toggle to the opposite direction

• Fixed incorrect scrolling of middle pane after item edit
• Fixed erratic window height in Preferences window
• Miscellaneous bibliographic output and word processor integration fixes
  • Updated citeproc-js to 1.0.425
• Focus preferences window if already showing
• Improved handling of corrupt translator files
• Fixed checkboxes in tag selector menu on OS X
• Fixed error importing RDF files with very long notes
• Escape special characters in file paths when attaching files
• Don't update item when tabbing through empty Date field
• Fixed saving of web pages with invalid characters at end of URL
• Don't show open/save dialog when dragging certain text-based files (e.g., Python scripts) into Zotero
• Various other issues

• The Q promises library is now available and used in various places
• Added asynchronous versions of various functions that return Q promises
  • Zotero.HTTP.promise()
  • Zotero.File.getContentsAsync()
  • Zotero.File.putContentsAsync()
  • Zotero.File.getBinaryContentsAsync()
• Allow web translators to monitor DOM nodes for changes in order to re-trigger detectWeb()