v4.0.0-rc03

WARNING

• this release is the first release of FastAdapter migrated to kotlin.

Changes

• this release contains a big amount of changes, including many breaking API changes to make its implementation easier, and make the APIs better compatible with kotlin.
  • Please see the migration notes: https://github.com/mikepenz/FastAdapter/blob/feature/v4/MIGRATION.md#v4xy

Changes on top of rc02

• adjust the generic definition of the IParentItem interface for the subitem list.
• introduce type aliases for the different elements to allow easier definition of generic adapters
• replace various interfaces with kotlin function types
  • this will result in some breaking changes since rc02
  • nicer specification for kotlin
  • java7 code will not be as nice (consider java8 lambdas)