0.14

• Switched to Kotlin version 1.1.1 (can still be used with 1.1.0)
• Introduced consumeEach helper function for channels and reactive streams, Rx 1.x, and Rx 2.x
  • It ensures that streams are unsubscribed from on any exception
  • Iteration with for loop on reactive streams is deprecated
  • Guide to reactive streams with coroutines is updated virtually
    all over the place to reflect these important changes
• Implemented awaitFirstOrDefault extension for reactive streams, Rx 1.x, and Rx 2.x
• Added Mutex.withMutex helper function
• kotlinx-coroutines-android module has provided dependency on of Android APIs to
  eliminate warnings when using it in android project