FART To-Do List
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  High Priority:

  Medium Priority:
    - Scene file pre-parser to allow includes / macros
    - Add spotlight and directional light types
    - Multi-core rendering in non-distributed mode
    - Look into half-space pruning optimization
    - add fog support

  Low Priority:
    - Refraction
    - Textures in materials
    - Fix boolean objects composed of sub-objects of different transparencies