Roadmap to 2.0.0-alpha

[scallyw4g]

Master list of features & bugs for cutting first 2.0.0-alpha RC

1. Make terrain shaders configurable, and selectable at runtime such that people can author and share terrain shaders.
2. Ability to profile shaders (particularly the terrain shader)
3. User-defined controls
4. Streamline / optimize process of going from noise values -> mesh in VRAM. Should be possible to have nearly 0 CPU overhead
5. Integer based input space
6. Option to draw camera ghost
7. Update terrain_gen example with several basic terrain generators which can be toggled between at runtime
8. Runtime select/change visible region size
9. Runtime scrolling visible region around
10. Make make.sh tolerate poof not being found, even if RunPoof was called
11. Persist render_settings
12. Persist engine_debug
13. Camera FOV & Sensitivity settings
14. Settle on 15-bit or 16-bit HSV, or something else. Shader code is 15 bit, cpp is 16-bit
15. Alpha blend / dither LoDs instead of popping
16. Fix voxel picking
17. Fix selection region
18. Fix world editing
19. Fix collision detector
20. Fix standing spots
21. Fix shadow mapping
22. Fix grid drawing