- modify ncmenu constructor Accept &mut[] instead of Vec<> to avoid FFI related problems. Furthermore, from rust 1.48 it's easy to convert a Vec into an array using the std::convert::TryInto trait.
- fix ncmenu method names.
- fix & refactor Notcurses contructors; add `with_debug` constructor.
- make NcPlane.set_base receive a char instead of a reference, since it's copy.
- add `rre` cargo alias for running examples on release.
- add new alias `t_all` for running every test even if some fail.
- call it from `.drone.yml` to have more complete testing picture.
- add a new test for `notcurses_init` as the first test.
- make Notcurses `new()` constructor not output banners.
- add an additional constructor `with_banners()`.
- add new aliases for running examples silently.
- improve comments & run rustfmt.
