In order to be consistent with the rest of the naming scheme, and in order to avoid conflicts with the higher level rust wrappers, which will be using `Notcurses` for the wrapper struct from now on.
- also deprecate `NotcursesOptions` and rename it to `NcOptions`.
- update examples, docs and readme.
- include new functions: ncdirect_stream, ncdirect_supported_styles, ncdirect_styles, nccell_width, ncinput_nomod_p.
- account for functions: ncplane_halign, ncplane_valign.
- rename ncpalette_get_rgb and ncpalette_set_rgb to ncpalette_get_rgb8 and ncpalette_set_rgb8 respectively.
- minor formatting fixes.
- add type aliases: NcDirectF (NcVisual alias), NcDirectV (NcPlane alias).
- implement wrapper methods for the `ncdirect_*` functions on NcDirectF.
- the methods over NcDirectF are prefixed with `ncdirectf_` to distinguish them
from the other NcVisual methods (since they are both type aliases, they
share their methods).
- fix typos in `direct.h`:
- ncdirect_geom_frame > ncdirectf_geom()
- ncdirect_render_loaded_frame > ncdirectf_render()
- add NcVGeom struct.
- minor fixes & rustfmt.
- add new Notcurses methods: `canhalfblock()` and `canquadrant()`.
- add doc links to NCBLIT_* flags from the capabilities methods.
- update the full-capabilites example to include `canhalfblock`, `canquadrant`,
`canchangecolor` and `canfade` functions.
- rustfmt
- move blitter type, NCBLIT_* constants and NcPixelGeometry from the plane module to the visual module.
- add information about blitter graceful degradation the NcBlitter type.
- add cross linking from/to the NCVISUAL_OPTION_NODEGRADE flag.
- update the full-capabilites example to include braille.
- separate the methods into its own module.
- add constants NCVISUAL_OPTION_ADDALPHA, NCVISUAL_OPTION_HORALIGNED, NCVISUAL_OPTION_VERALIGNED
- add NcRgba type.
- update the docs.