Allow implicitly cloning arguments instead of referencing

[cecton]

I just discovered this great library yesterday and I think it's fantastic!

Here is a new improvement for it that will allow the user to be more productive
by not having to deal with references all the time.

This PR allow the user to write types that are not references. If they are not,
the value will be cloned at the beginning of the function.

Properties in Yew should ideally be cheap-to-clone because they are passed from
parent to children by cloning. So it is safe to assume that the user will want
the actual types most of the time instead of references.

Here is an example of its usage:

use yew_autoprops::autoprops_component;
use yew::prelude::*;

#[autoprops_component]
fn CoolComponent( bool1: &bool, bool2: bool, int1: &i8, int2: i8) -> Html {
    if *bool1 {
    }

    if bool2 {
    }

    if int1 > &5 {
    }

    if int2 > 5 {
    }

    html! {
        <div>
        </div>
    }
}

[valyagolev]

Thank you for both contributions, they seem very useful! I fixed two of the failing tests.

But this PR doesn't seem to work with generics, see the third failing test. I'll be able to look into this only a bit later – I'm completely out of context...

Since you're interested in this project, and have an eye on maybe getting it into yew, I invited you as a maintainer so you can get the CI to run automatically. It goes without saying that this comes with no expectations from you, it's purely for your own convenience if you'd ever want to contribute more.

[cecton]

But this PR doesn't seem to work with generics, see the third failing test. I'll be able to look into this only a bit later – I'm completely out of context...

no worry, its not your job to fix my bugs lol

[valyagolev]

Released as 0.3.0. Maybe update the README too if you have the time ;-)