more stability for parallel build

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>

Clean orphaned cached accessories / handle uncaught exceptions
Update dependency version

And avoid possible race condition for temporary directory.

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>

Update to 0.4.47
Some document update.
Add ability to publish external accessory separately.

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>

Homebridge is a lightweight Node.js server you can run on your home network that emulates the iOS HomeKit API

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>