PlotItemBase is unresolved when trying to implement trait PlotItem

[ccarezza]

Describe the bug

Since 0.32, the PlotItem has a new dependency PlotItemBase . When importing PlotItemBase, the dependency is not found

To Reproduce
Steps to reproduce the behavior:

1. Create a simple project that depends on egui_plot 0.32 or higher
2. Include a import line such as: '''pub use egui_plot::PlotItemBase;'''
3. Compile

Expected behavior

Compilation works

Screenshots

error[E0432]: unresolved import egui_plot::PlotItemBase

Additional context

I believe this issue happens because in lib.rs there is a 'pub use crate' that references 'PlotItem' but there is no reference to PlotItemBase, what prevents it from being imported properly

[bircni]

why would you need this import - its private as you should not need it

[ccarezza]

The PlotItem trait has now a dependency to PlotItemBase I have working code (in version 0.31) that implements the PlotItem trait, but I'm unable to port this code to version 0.32 as the trait requires me to implement the base and base_mut functions, what I cannot do without this import

pub trait PlotItem {
   ...
    fn base(&self) -> &PlotItemBase;

    fn base_mut(&mut self) -> &mut PlotItemBase;

[markusdd]

Ah...I see you also stumbled across this. I just ran into this with #106

I am stumped that this even compiles, having a Private Type or public type in a private library as return value in a public Trait should plain and simply be forbidden. That seems like a bug in Rust itself to me.