v0.49.3031

• Breaking: Upgraded EventStore.Client dependency to version 4.0
• Breaking: Changed target framework for EventFlow.EventStores.EventStore to
  .NET 4.6.2 as required by EventStore.Client NuGet dependency
• Fix: EventFlow.Hangfire now depends on Hangfire.Core instead of
  Hangfire
• New: Added an overload to IDomainEventPublisher.PublishAsync that isn't
  generic and doesn't require an aggregate ID
• New: Added IReadModelPopulator.DeleteAsync that allows deletion of single
  read models
• Obsolete: IDomainEventPublisher.PublishAsync<,> (generic) in favor of the
  new less restrictive non-generic overload