- `UniverseSelection` class will now keep track and remove internal
currency subscriptions through the usage of new class
`CurrencySubscriptionDataConfigManager`
- Modifying existing regression tests to assert bug 2773.
- Adding new regression test that fixes the case where a new cash is set
after initialization. This could happen during cash sync performed by
the `BrokerageTransactionHandler`.
- Adding new `CashAdded` event for the `CashBook` to solve the
issue.
Martin Molinero