* Split utils into files
* Move reducer to another file
* Write types explicitly
* Remove unnnecessary check
* Move things around a bit
* Move more stuff into agent factories
* Move more stuff into agent
* Fix gates await
* Clarify comments
* Enforce more via types
* Nit
* initSession -> resumeSession
* Protect against races
* Make agent opaque to reducer
* Check using plain condition
