wallheaven 1.0.0

Random image fetcher for wallhaven.cc
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#[derive(Debug)]
pub struct CustomError {
    message: String,
}

impl CustomError {
    pub fn new(message: &str) -> Self {
        CustomError {
            message: message.to_string(),
        }
    }
}

impl std::fmt::Display for CustomError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.message)
    }
}