Procedural Pyrotechnics - shader bundle folder.

The raymarched fireball is drawn by a custom shader that ships here as a Shabby
AssetBundle:

    proceduralpyrotechnics.shab

That file is COMPILED in the Unity Editor from shaders/ExplosionRaymarch.shader
(see shaders/BUILD_SHADER.md in the source repo). It is not produced by the
Mac/dotnet build, so until it is dropped in here the mod automatically falls back
to the particle explosion.

Requires the Shabby mod (GameData/Shabby/) to load. Install Shabby via CKAN
("Shabby") or https://github.com/KSPModdingLibs/Shabby/releases .
