Forget-Me-Not Shaders

Hey!

v0.5.0 is a smaller release but still adds a couple of very nice things.

• Improved bloom
• Improved ambient occlusion
• Improved held light occlusion
• Improved end sky
• Improved weather atmosphere & VL
• Added fog scattering effect, also known as bloomy fog

API changes (FMN PBR version 2):

• Control water fog color by changing the water albedo using either a texture or a shader.
• When fmn_isPlayer is 1, fragment will be discarded when making the depth image to trace for held light occlusion.