Apply whitespace fixes from code review
- Add Docker build cache friendly example utilizing Spring Boot Layered JAR and Maven Assembly Plugin ([1412](https://github.com/fabric8io/docker-maven-plugin/pull/1412))
- Retry port mapping to avoid race condition where complete port information may not be initially available in Docker Engine 20.10.5 ([1447](https://github.com/fabric8io/docker-maven-plugin/pull/1447))
- New `copy` goal for copying files and directories from containers to host ([752](https://github.com/fabric8io/docker-maven-plugin/issues/752) and [1405](https://github.com/fabric8io/docker-maven-plugin/pull/1405))
+ - Add support for multiple copy layers using multiple assemblies ([554](https://github.com/fabric8io/docker-maven-plugin/issues/554))
* **0.34.1** (2020-09-27)
- Fix NPE with "skipPush" and no build configuration given ([#1381](https://github.com/fabric8io/docker-maven-plugin/issues/1381))
