Schema Builder & Schema Generator

This release introduces the Schema builder & generator.

Thanks @fcoedno for these high quality hacktoberfest contributions!

Update `flix-tech/avro-php` dependency

Thanks to @nick-zh

Switching to fresh Avro PHP implementation

[FT] New Avro implementations for SR and Schema (#25)

* [FT] New Avro implementations for SR and Schema

* [FX] Fix ordered imports

Feature Release v1.2.0

This feature release changes the dependency from the FlixTech Avro to the Wikimedia one which is better maintained.

Feature Release v1.1.0

This release provides the Symfony Serializer component integration.