Mostly Internal Stuff

• Update dependencies
• Add extra node versions for Travis tests
• Get rid of usb-types-fix.ts because that is fixed in the latest version of @types/usb
• Fix npm test command to remove deprecated --type-check flag
• Move over to actual enum types for constants (Thanks @nickbclifford!)

Go with the Flow

• Added support for the Flow Deck (look at /examples/hover.js and /examples/flowSequence.js for usage)

Polishing and Documentation

Not much actual code change. Added documentation, fixed Travis tests, and more!

The Basics

Basic library functionality is done. You are able to:

• Connect to a Crazyflie 2.0
• Fly it (setpoints)
• Access sensor data (logging)
• Access settings (parameters)

Along with basic documentation for every system. There are still things to do, but we're almost there!