Older versions of node are no longer maintained and homebridge 1.3
introduced adaptive lightning and child bridges which are both relevant
to this plugin.

- Have devices with different limits than those specified in the
  YeeLight specification in a `devices.json` file to allow for a cleaner
  way of adding them in the future.
- Improve moonlight feature detection by detecting the presence of
  `active_mode` which should be present only in devices with moonlight
  support.

Fixes: #102, #78, #65, #40