Simple Event Bus

Minimal event bus in rust. It provides a basic event bus system that works with (probably) any type.

Example Usage:

```rust use simpleeventbus::{Event, EventBus, Subscriber};

struct ExampleSubscriber { pub name: String, }

impl ExampleSubscriber { pub fn new(name: String) -> ExampleSubscriber { ExampleSubscriber { name } } }

impl Subscriber for ExampleSubscriber { type Input = String;

fn on_event(&mut self, event: &Event<Self::Input>) {
    println!("{} received message: {}", self.name, event.get_data());
}

}

fn main() { let mut event_bus = EventBus::new();

// We have to manually create and add each subscriber to the event bus.
event_bus.subscribe_listener(ExampleSubscriber::new("Subscriber 1".to_string()));
event_bus.subscribe_listener(ExampleSubscriber::new("Subscriber 2".to_string()));

// We can manually define an event and publish it to the event bus.
event_bus.publish(Event::new("hello".to_string()));
event_bus.publish(Event::new("world".to_string()));

// Alternatively, we can use the From trait to define an event and publish it to the event bus.
// This is as simple as using ".into()" on the data (so long as it matches the event bus's type parameter).
event_bus.publish("!".to_string().into());

// Here we show another example, this time directly from a String instead of using &str.
let test_string = String::from("Hello, World!");
event_bus.publish(test_string.into());

// Runs through each event, and calls each listener's on_event method.
event_bus.run();

}

```

Feel free to fork this implementation to add your own features!