Implemented enhancements:

• Add ^5.0 in composer.json for symfony dependencies #777

Fixed bugs:

• @VirtualProperty makes collection null #596

Closed issues:

• Jms deserializer class with parent properties #774
• Bad Serialization : object instead of array #773
• Interface 'Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface' not found #765
• JSON Serialization Options seem to be ignored #763
• Symfony. User Deprcated warning. #759

Merged pull requests:

• Fix typo in UPGRADING.md #760 (jdreesen)