1.4.0

Consolidated patch notes from 1.4.0 release candidates:

* Upgrade PDFReader to Reader 2.0 (which also supports epubs and snapshots)
* Enable creating/editing annotations and modyfing PDFs in Reader
* Drop support for Safari 10
* Drop support for pre-Chromium Edge
* Tweak attachments pane to show "open in reader" option for all compatible files
* Fix web library crashing while version conflict detected in reader mode
* Optimise fetching library settings
* Fix incorrect icon used in attachments pane for some PDFs
* Fix sorting in new items menu
* Fix a bug where adding an image to a note could trigger library reload or a crash
* Other minor improvements

package.json

@@ -1,6 +1,6 @@
 {
   "name": "zotero-web-library",
-  "version": "1.4.0-rc.2",
+  "version": "1.4.0",
   "description": "Web library from zotero.org",
   "main": "src/js/zotero-web-library.js",
   "files": [