Added an Enum class for testing
Merge remote-tracking branch 'origin/master'

Conflicts:
	doc/Coverage/ClassNameIdentifier.php.html
	doc/Coverage/Commit.php.html
	doc/Coverage/CommitEventEnvelope.php.html
	doc/Coverage/EventCollection.php.html
	doc/Coverage/EventEnvelopeMapper.php.html
	doc/Coverage/EventStreamIdentifier.php.html
	doc/Coverage/Events/BaseEvent.php.html
	doc/Coverage/Events/dashboard.html
	doc/Coverage/Events/index.html
	doc/Coverage/Identifier.php.html
	doc/Coverage/ImmutableEventCollection.php.html
	doc/Coverage/Persistence/Memory.php.html
	doc/Coverage/Persistence/dashboard.html
	doc/Coverage/Persistence/index.html
	doc/Coverage/SerializationStrategy.php.html
	doc/Coverage/SerializerRegistry.php.html
	doc/Coverage/Serializers/JsonSerializer.php.html
	doc/Coverage/Serializers/PhpSerializer.php.html
	doc/Coverage/Serializers/dashboard.html
	doc/Coverage/Serializers/index.html
	doc/Coverage/UniversalUniqueIdentifer.php.html
	doc/Coverage/dashboard.html
	doc/Coverage/index.html
	doc/TestDox/index.html