Add lints

Add some useful #![deny(...)] lints:
- missing_docs to disallow undocumented public items;
- missing_debug_implementations for public types;
- no unsafe code or unstable features.

src/lib.rs

@@ -24,6 +24,13 @@
 //!
 //! [ListenBrainz HTTP API]: https://listenbrainz.readthedocs.io/en/production/dev/api/
 
+#![deny(
+    missing_docs,
+    missing_debug_implementations,
+    unsafe_code,
+    unstable_features
+)]
+
 mod error;
 pub mod raw;
 mod wrapper;

src/raw/client.rs

@@ -18,6 +18,7 @@ const API_ROOT_URL: &str = "https://api.listenbrainz.org/1/";
 /// - [`Error::Api`]: the API returned a non-`2XX` status.
 /// - [`Error::Json`]: the request or response data could not be converted from or into JSON.
 /// - [`Error::Http`]: there was some other HTTP error while interacting with the API.
+#[derive(Debug)]
 pub struct Client {
     api_root_url: String,
 }
@@ -30,6 +31,7 @@ impl Client {
         }
     }
 
+    /// Construct a new client with a custom API URL.
     pub fn new_with_url(url: &str) -> Self {
         Self {
             api_root_url: url.to_string(),

src/raw/request.rs

@@ -1,5 +1,7 @@
 //! Low-level request data models.
 
+#![allow(missing_docs)]
+
 use std::collections::HashMap;
 
 use serde::Serialize;

src/raw/response.rs

@@ -4,6 +4,8 @@
 //! information. See the documentation of the [`RateLimit`] type for more
 //! details.
 
+#![allow(missing_docs)]
+
 use std::collections::HashMap;
 
 use attohttpc::Response;

src/wrapper.rs

@@ -7,6 +7,7 @@ use crate::raw::Client;
 
 /// Contains a ListenBrainz token and the associated username
 /// for authentication purposes.
+#[derive(Debug)]
 struct Auth {
     token: String,
     user: String,
@@ -16,6 +17,7 @@ struct Auth {
 ///
 /// As opposed to [`Client`](crate::raw::Client), this aims to be a convenient and high-level
 /// wrapper of the ListenBrainz API.
+#[derive(Debug)]
 pub struct ListenBrainz {
     client: Client,
     auth: Option<Auth>,