v0.6.0

• New derivation invalidation logic ensures that derivations always get the latest values from their sources.
• IObservableValue<T> once again implements IObservable<T>, and values property has been removed.
• Replaced PromiseQueue with MicrotaskQueue.
• Derivations take in an optional valuesEqual function to determine if the values have changed.
• Added optional dependencies parameter to useModel() to allow the model to be recreated when the dependencies change.
• Events and event classes will produce errors if used directly as state. They can still be part of models that are in state.
• Removed the deprecated readonly property on mutable models.

Logging improvements

• Improved logging performance.
• Improved logging for react components.
• Fixed a memory leak where all sources were being held onto by logs.
• All logs are collapsed by default.
• Built-in "restored" event is not logged as a source for reductions.