Merge v1.1.2 - SharedObjectField
- New `SharedObjectReferenceable`: `SharedObject` + `ReferenceableType`
- `SharedObjectIsolate` now implements `SharedObjectReferenceable<R>`.
- New `SharedReferenceIsolate`.
- New `SharedFieldInstanceHandler` and `SharedObjectField`.
- `SharedStoreField` and `SharedMapField`:
- Now extends `SharedObjectField` to reuse `SharedObjectField` implementation.
- `ReferenceableType`:
- Added `getSharedObject`, `getOrCreateSharedObject` and `disposeSharedObject`.
- Improve documentation.