It's mostly backward compatible, it depends on how complex your project is and what dependencies you rely on. Simple projects should be fairly straightforward -

It's mostly backward compatible, it depends on how complex your project is and what dependencies you rely on. Simple projects should be fairly straightforward - If you rely on the EventBus install mitt instead, will take you maybe 10 mins to replace. Rewriting your filters so they are plain methods instead should also be straightforward.