5.0.0

Increased testability and added new Jest tests.

Breaking change:
The base class now has a new public property pharkasChangeNotifications which returns an Observable<void>. This is unlikely to break existing users, but is a breaking change in the strictest API management sense.

What's Changed

• Fix implicit symbol to string conversion lint errors by @WorldMaker in #39
• Add Jest tests by @WorldMaker in #40

Full Changelog: v4.0.0...v5.0.0