Battletoads in Battlemaniacs Recomp 0.1.2

Battletoads in Battlemaniacs Recomp 0.1.2: CRT Lottes by default, settings during play, audio interpolation, new upscalers, and saves that are never lost on update. Setup pack: no ROM or game data is included; same first-run steps as before (see the README).

New

• Settings during play: Ctrl+L (or Select+L3 on a controller) reopens the
  launcher. Shader, window scale, volume and controls apply when you press
  Resume, without restarting the game.
• Audio interpolation: press I to cycle Gaussian (the console's own,
  default), Cubic (crisper highs) and Sinc. It changes only what you hear;
  the game, its echo and save states are unaffected. The choice is kept.
• New upscaler shaders: ScaleFX, NNEDI3 (neural) and NNEDI3
  (neural, high).
• A fresh install starts with the CRT Lottes shader. An install that
  already has a shader chosen keeps it.
• Updates never cost you a save. From the next update on, the updater
  copies your save states to save-backups\<date>_before_<version>\ before
  installing, leaves save files out of the copy and puts the backup back if
  they changed anyway. Save states from earlier versions keep working, and
  every release is now checked for that before it is published.

Fixed

• HDMA raster effects (per-line color, layer and scroll changes) started one
  line late; they now start on the line the game asks for.
• Choosing None as the shader during play no longer leaves a black
  screen.
• Multi-pass shaders that read the original game frame from a later pass
  (ScaleFX) no longer draw black.

Updating from 0.1.1: accept the update offer when the game starts, then press Generate & rebuild. In-game saves, save states and settings are kept (checked for this release: a save and a save state made in 0.1.1 survive the update and load in 0.1.2).

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Full history: CHANGELOG.md

SHA-256 3fe92d2dcd764e7c12955a497e70d2eb3b6d91464911b264ea34cd33f863d16b