Add After dispatch hook and Before transition, rename existing hooks

[dragonnn]

Although on_dispatch and on_transition hook are intend to be used for loging in some cases it can be useful to abuse them to have a global even handler that stores some filtered events in self. For that case it sometimes makes sense to be able to store something in self after a state handler is called to for example use it for storing previous values that can be used when a new value comes in to compare too.

[mdeloof]

I'm open to adding an after_dispatch hook, but we should then probably rename on_dispatch to before_dispatch, and on_transition to after_transition. For completeness sake we should probably also add before_transition.

(My apologies for not responding to this sooner. I'll try to be more responsive going forward :) )

[dragonnn]

Thanks for looking into it! I do agree renaming all of those and adding before before_transition. Do you want all of that in this PR?

[mdeloof]

Yes, if you want to, you can go ahead and make the changes on this PR. But if you're not able to do it at the moment, just let me know and I'll see what I can do.

[dragonnn]

Sorry for the delay, should be done. I don't think I missed anything. I renamed the consts for hooks to uppercase in IntoStateMachine too as suggested by clippy.

[christianheussy]

Isn't this a breaking change? I would think the manifest version should be revised to 0.4.0. Alternatively, maybe the macro could still support the previous names and emit a warning that they are deprecated?

[dragonnn]

Definitely a breaking change, if you would like to have the version bump in this PR too I am will add that right away, didn't do it because I am not sure how you would like to manage that.

[mdeloof]

I think you forgot to call M::BEFORE_TRANSITION() in the transition() function? :) Other than that everything looks good, just a couple of comments with the wrong name.

Regarding the version bump, you can change it to 0.4.0 for both the statig and statig_macro crate.

[dragonnn]

Thanks! I hope I didn't missing anything, should be fine now

[mdeloof]

Thanks! Almost there I think, just a small error in the docs left. You will also have to bump the version of the statig_macro dependency in /statig/Cargo.toml.

[dependencies]
-statig_macro = { path = "../macro", version = "0.3.0", optional = true }
+statig_macro = { path = "../macro", version = "0.4.0", optional = true }

[dragonnn]

Oh, my bad! Sorry, I should catch that. Should be fine now :)

[mdeloof]

No problem ;) Thanks again for your work!