Add helper module for entity_embed hook tests
Fix typehint of EntityEmbedDisplayInterface
Add tests for entity_embed hooks
Declare visibility for test method
Use custom tag for container DOM element
Merge pull request #81 from cs-shadow/hook-tests

Add tests for entity_embed hooks
Return non-zero exit code if tests fail
Remove concurrency from tests
Move tests inside a single method
Remove unused code
Merge pull request #82 from cs-shadow/custom-tag

Use custom tag for container DOM element
Merge pull request #83 from cs-shadow/cleanup-tests

Move tests inside a single method and remove unused code
Clarify technical details instead of usage information.
Update README.md
Drop support for text-alignment.
Merge pull request #85 from cs-shadow/8.x-1.x

Drop support for text-alignment.