v4.2.0

Features

• Symbol keyed and function valued properties are also observables. (Well known symbol keyed props are still not observables and they will likely never be).
• Mutations in reactions are no longer forbidden and reactions may trigger other reactions. Infinite loops are cut in case of the default scheduler, but they may occur for custom schedulers - based on its implementation.

Fixes

• Nesting reactions works properly from now on.