v0.15.0

• Removed transformation logic from Record struct factory. Use S.transform together with S.record to have the same behavior as before
• Renamed constructor arguments to parser
• Renamed destructor arguments to serializer
• Added S.record0 struct factory
• Added Tuple struct factory
• Added S.literalUnit struct factory
• Removed Unit literal, use S.literalUnit instead
• Added more examples to the documentation