Changelog:

• Add show and hide events to BrowserWindow.
• Do not block when calling document.hidden.
• Fix visibilitychange event not working.
• Fix passing certificate to select-client-certificate event's callback.
• Fix PrintScreen not working as accelerator.
• Fix style issues with <webview> inside flexbox.
• Fix unable to read image when there is .. in file path.

Linux

• Fix resizable option not working.

Windows

• Make fullscreenable option work.

OS X

• Add platform-theme-changed event to app module.
• Add app.isDarkMode() API.
• Fix Cmd+~ cycling windows in wrong direction.
• Fix BrowserWindow.isMaximized() returning wrong result when window is not resizable.