Migrated from Moq to FakeItEasy
Added FakeItEasy and migrated PollingClient and AsynchronousDispatcher tests
Migrated SynchronousDispatcherTests
OptmisticEventStreamTest migrated to FakeItEasy
Refactored OptimisticEventStoreTests to FakeItEasy
Refactored PipelineHooksAwarePersistanceDecoratorTests to FakeItEasy
Refactored DispatchCommitHookTests to FakeItEasy
Removed Moq reference from tests project
Removed my own TODOs (GH issues are opened for those issues)