Serenada Android 0.2.0

What's Changed

• Added a native iOS client app by @agatx in #21
• Webrtc convergence by @agatx in #23
• Moved join notifications to be non-blocking by @agatx in #24
• Add cross-platform automated smoke test by @agatx in #25
• Fixed issues when joining a saved link from another host by @agatx in #27
• Auto hide conditional disable by @agatx in #28
• Unified error state machine by @agatx in #29

Full Changelog: android-release-0.1.10...android-release-0.2.0