0.6.12

• Disk and shared directory for Baker micro vm
• Persistent environments
• Rework of ssh
• mysql8
• Bug fixes for terminating remote processes with local Ctrl-c, mysql 8 rebakes
• Allow no ip address in baker.yml
• Improve python + jupyter Bakelets
• Fix quoting issue in Windows paths
• Download progress bar, better time outs, delete/stop fixes