Add debug output

Useful debug output was added to some operations, for instance like that:

20:44:30.005 [debug] reading schema `io.confluent.Payment` from the file /Volumes/SSDCard/Development/github/avrora/test/fixtures/schemas/io/confluent/Payment.avsc

Also, Avrora.Config.schemas_path default value was fixed

Out of beta, yaw 🎉

One of the main difference from the first version – no more AvroEx dependency. Instead erlavro is used. This change allows having fewer dependencies and better performance.

Also an internal structure of Avrora.Schema was changed and now it consumes less memory.

Welcome Avrora!

The first release of a library for encoding/decoding AVRO-schemas. It can use both locally stored schemas and schemas uploaded to a confluent schema registry