4.9.0

Maintanance:

• update dependencies and default node version
• documentation updates

Project:

• deprecation: Karma tests
• refactor: replace terrificJs with gondel in all examples
• docs: example improvements
• chore: remove unneeded npm script "visual-reference"

Webpack:

• fix: use contenthash for 'output.chunkFilename' by default in production mode

App:

• chore: readd component helper for twig engine (backward compatibility)

More Changes:
4.8.0...4.9.0