FIelds refactor

• Field have been devided into several field classes to make the code more redeable

Recursive Schema Relationships

• Recursive OneToOne relationship added
• Recursive OneToMany relationship added

Code refactor

v0.3.1

Bump version v${VERSION}

Singular names

• Singular name for array's child name
• Singular name for map's child name
• Singular name for nested relationship OneToMany

Schema Relationships

• OneToOne relationship added
• OneToMany relationship added (array and map)

Enum, Array and Map fields fixed

• Enum, Array and Map fields fixed
• Schema Parse tests added using fastavro

First Release

v0.1.0

Bump version v${VERSION}