refactor: specify Eq when possible on PartialEq (#71)

See https://rust-lang.github.io/rust-clippy/master/index.html#derive_partial_eq_without_eq
Also simplify example/readme

README.md

@@ -99,7 +99,6 @@ For api parameters, the same approach is used. The only difference for parameter
 For example, parameters for `leaveChat` method:
 
 ```rust
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct LeaveChatParams {
     chat_id: ChatId,
 }

examples/api_trait_implementation.rs

@@ -7,7 +7,6 @@ use std::path::PathBuf;
 static TOKEN: &str = "TOKEN";
 static BASE_API_URL: &str = "https://api.telegram.org/bot";
 
-#[derive(PartialEq, Debug)]
 pub struct Api {
     pub api_url: String,
 }
@@ -18,7 +17,7 @@ pub enum Error {
     ApiError(ErrorResponse),
 }
 
-#[derive(PartialEq, Debug)]
+#[derive(Debug)]
 pub struct HttpError {
     pub code: u16,
     pub message: String,

src/api.rs

@@ -13,7 +13,7 @@ pub use telegram_api_impl::*;
 
 pub static BASE_API_URL: &str = "https://api.telegram.org/bot";
 
-#[derive(PartialEq, Debug, Serialize, Deserialize, thiserror::Error)]
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, thiserror::Error)]
 #[serde(untagged)]
 pub enum Error {
     #[error("{0}")]
@@ -26,7 +26,7 @@ pub enum Error {
     EncodeError(String),
 }
 
-#[derive(PartialEq, Debug, Serialize, Deserialize, thiserror::Error)]
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, thiserror::Error)]
 #[error("Http Error {code}: {message}")]
 pub struct HttpError {
     pub code: u16,