Version 1.6

[KlaudiuszWojtkowiak]

Today a new version is being released.

• Kotlin support
  It's possible to execute a reverse engineering for Kotlin
  Daobab supports null safety types.
  Kotlin DataBaseTarget contains the entire tables instances. The dedicated *Tables interface is not needed anymore.
  Kotlin example project added to the repository.

• Column interfaces needs a second type which is their field Type
  By introducing this change, it's possible to quickly change the type after reverencing engineering.
  In Kotlin it's used for nullability indicator - by using or removing a question mark.

• The default date fields in java are based on java.time package not java.util as before

• added MsSql support

• Introduced TypeConverters. It's possible to have own datatypes. Daobab will dynamically convert it via YourType<-->DBType.

• skip (QueryEntity) - selected columns won't be read for an entity.

• only(QueryEntity) - only selected columns will be read for an entity.

• compositeKeys - refactoring and improvements

• fixed some functions

• improved query generations

• 'having' statement fixed