message: Fix zombie children
  Resolves
diff: @@ -22,6 +22,7 @@ use std::borrow::Cow;
  use std::mem;
  use std::process::Command;
  use std::time::Instant;
  +use std::os::unix::process::CommandExt;
  use copypasta::{Clipboard, Load, Buffer};
  use glutin::{ElementState, VirtualKeyCode, MouseButton, TouchPhase, MouseScrollDelta};
  @@ -200,7 +201,16 @@ impl Action {
  },
  Action::Command(ref program, ref args) => {
  trace!("running command: {} {:?}", program, args);
  - match Command::new(program).args(args).spawn() {
  + match Command::new(program)
  + .args(args)
  + .before_exec(|| {
  + // Detach forked process from Alacritty. This will cause
  + // init or whatever to clean up child processes for us.
  + unsafe { ::libc::daemon(1, 0); }
  + Ok(())
  + })
  + .spawn()
  + {
  Ok(child) => {
  debug!("spawned new proc with pid: {}", child.id());
  },
  