Fix Avrora.Encoder for AVRO map fields
In this release with help of @MichalDolata Avrora.Encoder
start properly decoding AVRO map fields and instead of Erlang proplists they become Elixir Map
If you depend on the old behavior it can be easily restored with new configuration option:
config :avrora,
# ...
convert_map_to_proplist: true # optional: if you want to restore the old behavior for decoding map-type