region-render v0.8.0: the animated palette ships

region-render v0.8.0: the animated palette ships

• tools/region-render/ v0.8.0: the animated palette
  ships. --animate-palette emits the frame sequence with the
  palette rotated per the cycle pump decoded from DSUN.EXE
  (docs/dsun-exe-re.md 4.5.5-4.5.6): a PaletteCycle of 16
  8-byte records (flags, reload, counter, first, count), one
  rendered frame = one pump pass, active ranges rotating toward
  higher indices with the range's last colour wrapping to its
  first slot. Default registration is DS1's decoded boot-time
  set (four StartCycle calls: colours 1-5, 6-10, 11-15,
  240-248, all delay 2; a full rotation of the slowest range is
  the default 18-frame sequence). The flag composes with
  --animate-entities and --gif; --frame-count now works in
  either animated mode. DS2's cycle-registration init site is
  still undecoded, so DS2 regions approximate with the DS1
  ranges (documented). Library additions: PaletteCycle,
  CycleRecord, rotate_palette_range,
  RegionMap::write_png_frame_with_palette; regression tests
  cover the rotate semantics, the delay-counter firing
  schedule, the DS1 default set, and per-frame PLTE output.
  Also repairs the README palette-precedence table (it predated
  the v0.5.0 preset flag and the CPAL:200-first fallback).