Steve Penna

ReadCharacteristic doesn't work on iOS

1

`isAssociatedWith` is always returning `false` because [this line](https://github.com/JuulLabs/kable/blob/66b6a6f1f10a3c129c3145aec5bb89c0a94bfaa1/kable-core/src/commonMain/kotlin/ObservationEvent.kt#L27) winds up using a [referential equality check](https://github.com/JuulLabs/kable/blob/66b6a6f1f10a3c129c3145aec5bb89c0a94bfaa1/kable-core/src/appleMain/kotlin/Profile.kt#L59) on [CBCharacteristic](https://github.com/JuulLabs/kable/blob/66b6a6f1f10a3c129c3145aec5bb89c0a94bfaa1/kable-core/src/appleMain/kotlin/Profile.kt#L12), which fails (I don't know enough about iOS BT to know if we...