fix deprecation and clippy warnings

Author: rhysd

bench/benches/bench.rs

@@ -1,5 +1,6 @@
-use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use criterion::{criterion_group, criterion_main, Criterion};
 use keybinds::{Key, KeyInput, KeySeq, Keybinds, Mods};
+use std::hint::black_box;
 use std::str::FromStr;
 
 #[derive(Clone)]

examples/minimal.rs

@@ -17,7 +17,7 @@ fn main() -> io::Result<()> {
     keybinds.bind("Esc", Action::ExitApp).unwrap();
 
     println!("Type inputs and send it by hitting Enter key. Send Esc to exit");
-    for b in io::stdin().bytes() {
+    for b in io::stdin().lock().bytes() {
         // Convert your key input into `KeyInput` struct
         let input = match b? {
             b'\x1b' => KeyInput::from(Key::Esc),

examples/vim.rs

@@ -461,7 +461,7 @@ fn main() -> io::Result<()> {
         TextArea::default()
     };
 
-    let mut vim = Vim::new(textarea).map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
+    let mut vim = Vim::new(textarea).map_err(io::Error::other)?;
 
     loop {
         term.draw(|f| f.render_widget(&vim.textarea, f.area()))?;