message: Make `program` module in `iced_glow` private
diff: //!
  //! [`glow`]: https://github.com/grovesNL/glow
  //! [`iced_native`]: https://github.com/hecrj/iced/tree/master/native
  -//#![deny(missing_docs)]
  +#![deny(missing_docs)]
  #![deny(missing_debug_implementations)]
  #![deny(unused_results)]
  #![forbid(rust_2018_idioms)]
  #![cfg_attr(docsrs, feature(doc_cfg))]
  mod backend;
  -pub mod program;
  +mod program;
  mod quad;
  mod text;
  mod triangle;
  