Implemented enhancements:
- Allow to add expression function providers using DI tags #711 (goetas)
Closed issues:
- Symfony 4 - Service "jms_serializer" not found #713
- Configuration property enable_cache is missing #712
- IndexBy in OneToMany Annotation is ignored #710
- why there is backslash ? #709
- Declaration must be compatible #708
- Unrecognized option "xml" under "jms_serializer.visitors" #698
