v2.1.3 - For Godot4.2 and later.

Fix:

1. Prevent potential self-connection in HFSM editor.
2. Fix idle, physic, manual update logic.

optimize:

1. Use internal process and physics process, now you can override _process() and _physics_process() without calling super().
2. Show error massage when parsing expression failed.
3. Rename: HFSMUpdateType -> UpdateType.
4. Add arguments try_transit and delta for manual_update/manual_physics_update to enhance controllability of manual update mode.