Changelog:

• Add pageSize option for BrowserWindow.printToPDF.
• Add bounds payload for double-clicked event of Tray.
• Add WebContents.addWorkSpace and WebContents.removeWorkSpace APIs to change devtools workspace.
• Add Session.setDownloadPath API.
• Add allow-displaying-insecure-content and allow-running-insecure-content options for BrowserWindow.
• Allow checking keyboard modifiers in the clicked events of Tray.
• Fix RequestHttpJob not sending headers.
• Fix zoom level of devtools not remembered.
• Fix node-integration option not working in window.open.
• Fix a crash when closing window.
• Fix executing remote callbacks of renderer process when node integration is off in the renderer process.

Windows

• Set GUID for tray icons, preventing multiple items showing in notification area preferences.
• Implement double-clicked event.

Mac

• Fix crash when using accept attribute of <input> tag.
• A few fixes to Tray's behavior.