Adds various Avro schemes for both specific and generic Avro records
Adds tests
Added test to cover Scheme.withHandler usecase
Merge pull request #36 from MansurAshraf/develop

Adds various Avro schemes for both specific and generic Avro records
release notes
Merge branch 'release/0.5.3' into develop
Merge branch 'develop' into feature/scheme_test
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