1.9.0

• Added mysql:backup (with --filter=typo3, support for plain sql, gzip, bzip2, lzma compression)
• Added docker:create, will create an new instance of TYPO3 Docker Boilerplate (or any other docker boilerplate).
• Added docker:up with fast docker instance switching (will stop previous docker instance)
• Added docker:shell --user=root for custom user switch
• Added docker:root for root shell
• Added docker environment CLI_SCRIPT and CLI_USER support for docker:shell and docker:cli
• Refactored shell command execution (again)
• Fixed code styling
• Improved code and fixed some smaller bugs