3.0.0 Beta 1

• Add "shell" command to help output #50
• Output username and password when starting #52
• Add the bucket prefix to the S3 URL #54
• Updates Tachyon to 2.1.10 #53
• Fix Traefik to v1.7 #60
• Support new autoload method #51
• Add link to Altis setup docs #63
• XDebug/dev php server support #64
• Map QM paths to host file paths #56
• Ensure S3 bucket and uploads dir exist on start #71
• Make the es mem_limit configurable #73
• Add exec command #72
• Don't output whole log on logs command #74
• Show more output when running docker-compose #75
• Improve performance of exec in cli #77
• Docker exec tty uses lower case t #78