Version 0.2.1

Version 0.2.1 now has derive unit context for derivative calculus

docs/Protocol.md

@@ -83,7 +83,7 @@ packet classes.
 {
   "type": "dynalab_hello",
   "instance_id": "2f3c7f62-0a45-4d66-9f32-7fbeb92f9d36",
-  "core_version": {"type": "alpha", "major": 0, "minor": 1, "patch": 0},
+  "core_version": {"type": "alpha", "major": 0, "minor": 2, "patch": 1},
   "protocol_version": {"type": "alpha", "major": 0, "minor": 0, "patch": 1},
   "heartbeat_interval_ms": 1000,
   "heartbeat_timeout_ms": 5000