Google opens the door for Android apps that work across all kinds of devices

Google’s trying to make it easier for developers to create Android apps that connect in some way across a range of devices. In

, Google explains that it’s launching a new cross-device software development kit (SDK) that contains the tools developers need to make their apps play nice across Android devices, and, eventually non-Android phones, tablets, TVs, cars, and more.

The SDK is supposed to let developers do three key…