title: iOS CoreBluetooth state unsupported when using in iOS custom keyboard
body: <p>I want to use <code>CoreBluetooth</code> API within iOS keyboard extension (custom keyboard). However, the state for the <code>CBCentralManager</code> is unsupported. The device I use is iPhone 6. It works fine inside the container app. Does this mean that the <code>CoreBluetooth</code> API cannot be used inside the keyboard extension?</p>