Bump python-statemachine from 2.6.0 to 3.0.0

[dependabot]

Bumps python-statemachine from 2.6.0 to 3.0.0.

Release notes

Sourced from python-statemachine's releases.

StateMachine 3.0.0

Upgrading from 2.x? See upgrade guide for a step-by-step migration guide.

What's new in 3.0.0

Statecharts are here! 🎉

Version 3.0 brings full statechart support to the library — compound states, parallel states, history pseudo-states, and an SCXML-compliant processing model. It also introduces a new StateChart base class with modern defaults, a richer event dispatch system (delayed events, internal queues, cancellation), structured error handling, and several developer-experience improvements.

The implementation follows the SCXML specification (W3C), which defines a standard for statechart semantics. This ensures predictable behavior on edge cases and compatibility with other SCXML-based tools. The automated test suite now includes W3C-provided .scxml test cases to verify conformance.

While this is a major version with backward-incompatible changes, the existing StateMachine class preserves 2.x defaults. See the upgrade guide for a smooth migration path.

Compound states

Compound states have inner child states. Use State.Compound to define them with Python class syntax — the class body becomes the state's children:

from statemachine import State, StateChart
class ShireToRoad(StateChart):
class shire(State.Compound):
bag_end = State(initial=True)
green_dragon = State()
visit_pub = bag_end.to(green_dragon)
road = State(final=True)
depart = shire.to(road)

sm = ShireToRoad()
set(sm.configuration_values) == {"shire", "bag_end"}
True
sm.send("visit_pub")
"green_dragon" in sm.configuration_values
True
</tr></table>

... (truncated)

Commits

• b31d830 Merge branch 'release/3.0.0'
• 9a16dac chore: prepare release 3.0.0
• 26aef73 chore: headline
• e02f866 feat: add timeout() contrib helper for per-state watchdog timers (#585)
• f7cbd4a docs: add "Coming from the State Pattern" how-to guide
• 162cfc7 docs: add migration guide from pytransitions (#584)
• 04bf5ec docs: reorganize toctree sections and remove listeners from concepts
• 2975fea docs: merge mixins.md into integrations.md and move API ref to api.md
• 1c998a1 refactor: rename error_on_execution to catch_errors_as_events (#583)
• 2d7a551 docs: comprehensive v3 documentation rewrite (#582)
• Additional commits viewable in compare view

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Quality Gate passed

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