v2.3.2—before i get too deep

A good-sized release, after a more lengthy delay than is typical.

• ncplane_at_yx() now returns the EGC occupying that cell, even if the cell is a secondary column of a wide glyph. Previously, it returned an empty string in this case. ncplane_at_yx_cell() still replicates the exact nccell, allowing you to fully distinguish between the primary column of a wide glyph, the secondary column(s) of same, and an empty string. Furthermore, ncplane_at_yx() now takes the base cell into account; the result is exactly what is fed into rendering logic.
  • Note that this change cascades, affecting e.g. ncplane_contents().
• Added notcurses_cursor_yx() to get the current location of the terminal cursor.
• Added ncdirect_supported_styles() and ncdirect_styles() to the Direct Mode API.
• Closed memory leaks in ncvisual API (#1712, #1711)
• Support resizing visuals in the absence of a multimedia engine via simple noninterpolative sampling (#1705)
• Explicitly prevent more than one context (struct notcurses or struct ncdirect) at a time in a process
• ncplane_as_rgba() now supports NCBLIT_2x2 and NCBLIT_3x2, and requires the desired (inverse-)blitter to be passed explicitly (i.e. no NCBLIT_DEFAULT) (#1697)
• Restore colors properly following sgr/sgr0 in direct mode, for both palette and RGB (#1703)
• Fix bug in ncvisual_from_bgra() that manifested as broad inability to render in Rust, thanks @joseluis (#1703)
• Unified much of the storage shared across direct and rendered mode, killing off duplicated code, and packed all escapes into a single, tight, cache-friendly buffer (#1525)
• Always convert visuals to RGBA if not loaded in RGBA, fixing ncpixel API for them (#1680)
• Rust bindings now use bindgen 0.57, meaning maybe we can build a Fedora package, thanks @joseluis (#1339)
• Emit rmkx on exit, thanks @dnkl
• Always pad image data suitably for ffmpeg's SIMD-heavy backend (#1675)
• Rebuild auxiliary vectors on a new frame in both Sixel (#1642) and Kitty (#1605)
• Python CFFI fixes, thanks @scauligi
• ncplayer in direct mode (-k) was printing too many rows (#1673)
• Respect leny/lenx from ncvisual_options when rendering once more (#1661)
• Strengthened a lot of unit tests, wrote about a dozen new unit tests.
• Updated a number of man pages.

There's probably other stuff. It's a pretty big release.