v3.6.0

What's Changed

• bump libnotcurses-sys to v3.11.0.
• wrap the raw notcurses pointer to ensure proper dropping order in #10.
  This changes the public api of methods that previously required &mut Notcurses to now only require &Notcurses, and the Visual constructors now also require to be passed &Notcurses as well.

Full Changelog: v3.5.1...v3.6.0

(compatible with notcurses v3.0.11)