Sparrow has released version 1.4 of its eponymous email app. This update primarily involves performance and user-interface improvements, with everything from composing to synchronizing receiving a speed boost and some polish. Sparrow 1.4 also adds a few welcome new features, such as integration with the file sharing service CloudApp, pull-to-refresh, and support for proper first-to-last message sorting in conversation view. Several bug fixes round out the update. If Sparrow 1.4 prompts for your password at every launch, Sparrow suggests some possible workarounds until version 1.4.1 appears. ($9.99 new from the Mac App Store, free update, 12.0 MB, release notes)
Two Shortcuts for App Exposé
If you want to see all the windows for a particular app via App Exposé, there are two hidden shortcuts. For either, start by pressing Command-Tab to bring up the app switcher. Then, while still holding down the Command key, press either the 1 key or the up arrow. That puts you into App Expose mode, with all of an app's windows showing, and recent documents in a row across the bottom of the screen. Let up on the Command key, and then you can press Tab to cycle through all the running apps.