CHANGES_NEXT_RELEASE

- Set Nodejs 12 as minimum version in packages.json (effectively removing Nodev10 from supported versions)
- Fix: INVALID EXPRESSION policy at JEXL expression in attributes and entity_names (default values will be propagated and a warn will be logged instead of exception) (#1292)
- Export pluginUtils (so they can be used by IOTA code importing the library)
- Fix: empty device_id on device registration (#1298)