GIF Parser library

Simple library to parse GIF.

Example

```rust use std::fs::File; use std::io::BufReader;

fn main() { let filename = "tests/data/nayn.gif" let file = File::open(filename).unwrap(); let reader = BufReader::new(file);

let parser = GifParser::new(reader);

for token in parser {
    let token = token.unwrap();
    println!("TOKEN: {token:?}");
}

}

```