Add login functionality. If node accounts exist in status-go (keystores in ./data dir), then show the Login screen. Otherwise, show the Onboarding screen (generate keys screen).
Update nim-stew to latest version.
Change references to Address to the common type Account to prevent repeating of types.
Distinguish between unknown and unhandled signals.
Pass signals through to subscribers regardless if the signal type is known (in case the SignalSubscriber handles it with string comparison or other).
Update serialization as much as possible
Latest nim-stew updates allow type inheritance during de/serialization