support Cameo4+ and pro, cmdfile, preview

Here is an update supporting

• Cameo4 pro
• preview
• save cmdfile
• fuse paths option
• non reversing minTravelStrategy
• allow speed=30 for Cameo4
• override device model
• update MacOS install instructions
• add FreeBSD install instructions

Huge thanks to @gwhitney @tschamm @probonopd for the contributions and the valuable feedback.