5.1.0

• Added compatibility with Symfony 4.2.
• Added autowiring support for Elastica\Client.
• Added Pagerfanta 2.0 support.
• Added optional routing in ObjectPersister::deleteById.
• Added refresh options for persisters.
• Added index name to TransformEvent document.
• Added many unit tests.
• Added index templates support.
• Change method visibility in Configuration to private.
• Handle multiline strings in ElasticaLogger.
• Fixed pagination of ORM queries when populating.
• Profile panel redesign.
• Updated documentation files.
• Dropped PHP 5.6 support.