v5.0.0-beta9

Version 5.0.0-beta9

This closes all known bugs!

- [all] `SerialPort.list` now has more consistent output across all platforms.
- [all] Add promise support to serialport-repl
- [all] Add write recording capabilities to the mock bindings
- [all] calls to `.drain` now queue behind port open and in progress writes reported by and with lots of testing help from @tuna-f1sh
- [all] Change the default high water mark to 64k to match `fs.ReadStream`
- [all] fix(package): update bindings to version 1.3.0
- [all] SerialPort can now be compressed with `uglify-es` thanks to @rwaldron
- [docs] fixed a typo thanks to @amilajack
- [linux] `SerialPort.list` is now faster and less resource intensive thanks to @akaJes!
- [osx] `SerialPort.list` now returns the `tty` instead of the `cu` thanks to @@kishinmanglani
- [unix] fix a bug when poller errors would be unhandled thanks to @thiago-sylvain for reporting