[readme] minor updates

README.md

@@ -1898,6 +1898,8 @@ Detalized event semantics and payload structure:
     - circuit-breaker for long-living failures of your infrastructure inside the swarm elements and supervisor:
       the supervisor will stop (for some period of time or while the some factor will return false)
       trying to ressurect unexpectedly terminated swarm elements, and will notify about this;
+    - logging (thread + ractor limitations);
+    - instrumentation (thread + ractor limitations);
   - lock request prioritization;
   - **strict redlock algorithm support** (support for many `RedisClient` instances);
   - `#lock_series` - acquire a series of locks: