&zotero.upgrade.newVersionInstalled;
&zotero.upgrade.upgradeRequired; &zotero.upgrade.autoBackup;
&zotero.upgrade.majorUpgradeBeforeLink;
&zotero.upgrade.majorUpgradeAfterLink;
&zotero.upgrade.upgradeInProgress;
&zotero.upgrade.upgradeSucceeded;
&zotero.upgrade.changeLogBeforeLink;
&zotero.upgrade.changeLogAfterLink;