Eventuous 0.2.0

Bug fixes:

• Incorrect subscription checkpoint for $all
• Wrong system event ignore
• Possible exception in debug logging for subscriptions
• Empty event data causes failures

Changes:

• Base for subscriptions moved to its own package
• SubscriptionService is now Subscription
• DI extensions AddSubscription moved to the base subscriptions package

Features:

• Base for producers, to publish one event or an event batch
• EventStoreDB persistent subscription
• EventStoreDB producer
• RabbitMQ producer
• RabbitMQ subscription
• Google PubSub producer
• Google PubSub subscription

Known issues:

• #11
• #12
• #7
• Subscription resubscribe delay is set to 1 sec to observe the behaviour after some production issues with concurrent resubscribe attempts