docs: Release example of create_machine_class_from_definition

Author: fgmacedo

docs/releases/3.0.0.md

@@ -10,6 +10,36 @@ Statecharts are there! Now the library has support for Compound and Parallel sta
 
 StateMachine 3.0.0 supports Python 3.9, 3.10, 3.11, 3.12, and 3.13.
 
+
+### Create state machine class from a dict definition
+
+Dinamically create state machine classes by using `create_machine_class_from_definition`.
+
+
+``` py
+>>> from statemachine.io import create_machine_class_from_definition
+
+>>> machine = create_machine_class_from_definition(
+...     "TrafficLightMachine",
+...     **{
+...         "states": {
+...             "green": {"initial": True, "on": {"change": [{"target": "yellow"}]}},
+...             "yellow": {"on": {"change": [{"target": "red"}]}},
+...             "red": {"on": {"change": [{"target": "green"}]}},
+...         },
+...     }
+... )
+
+>>> sm = machine()
+>>> sm.green.is_active
+True
+>>> sm.send("change")
+>>> sm.yellow.is_active
+True
+
+```
+
+
 ### In(state) checks in condition expressions
 
 Now a condition can check if the state machine current set of active states (a.k.a `configuration`) contains a state using the syntax  `cond="In('<state-id>')"`.

statemachine/event_data.py

@@ -25,8 +25,6 @@ class TriggerData:
     Allow revoking a delayed :ref:`TriggerData` instance.
     """
 
-    _target: "str | None" = field(init=False, compare=False, default=None)
-
     execution_time: float = field(default=0.0)
     """The time at which the :ref:`Event` should run."""