3.0-pre-1

• Added support for direct dependency on JavaScript sources as 'external
  dependency'
• Added support for enum members with explicitly assigned values
• Extracted API from spaghetti-core
• Enum members in direct dependency proxies are defined by reference
  to the original implementation instead of locally for improved
  robustness against modular compilation.

Breaking Changes

• Revised syntax for improved legibility
• Values for enums and consts from transitive dependencies are no longer
  generated
• Removed Kotlin support