2.3.0

• Users can now send image attachments.
• Users can now expand and zoom images without leaving your app.
• Fixed bug where +[Intercom reset] could behave inconsistently (https://github.com/intercom/intercom-ios/issues/68).
• Intercom now honours prefersStatusBarHidden (https://github.com/intercom/intercom-ios/issues/66).
• Added IntercomDidStartNewConversationNotification as suggested in https://github.com/intercom/intercom-ios/issues/67.
• Ensure sessions are ended when your app is backgrounded.
• Renamed certs to fix https://github.com/intercom/intercom-cordova/issues/5.
• Improved support for CocoaPods Frameworks.
• Added nullability modifiers to Intercom.h for improved Swift compatibility.