message: Change cursor from pointer to text
  It seems that (as a rule) terminal emulators use the text mouse cursor rather
  than the pointer that is used now. This commit changes the cursor to
  using winit's built-in configuration function.
diff: @@ -16,7 +16,7 @@ use std::fmt::{self, Display};
  use std::ops::Deref;
  use gl;
  -use glutin::{self, EventsLoop, WindowBuilder, Event, CursorState, ControlFlow, ContextBuilder};
  +use glutin::{self, EventsLoop, WindowBuilder, Event, MouseCursor, CursorState, ControlFlow, ContextBuilder};
  use glutin::GlContext;
  /// Window errors
  @@ -195,6 +195,9 @@ impl Window {
  .with_vsync(true);
  let window = ::glutin::GlWindow::new(window, context, &event_loop)?;
  + // Text cursor
  + window.set_cursor(MouseCursor::Text);
  +
  // Set OpenGL symbol loader
  gl::load_with(|symbol| window.get_proc_address(symbol) as *const _);
  