unwrap on None

[codegod100]

/src/toasty/src/relation/belongs_to.rs:36:29:

impl<T: fmt::Debug> fmt::Debug for BelongsTo<T> {
    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
        self.value.as_ref().unwrap().fmt(fmt)
    }
}

as_ref() is None when I try to println one of my structs and throws a panic

[codegod100]

https://github.com/tokio-rs/toasty/pull/2

[codegod100]

See #6