v0.3.1

Changes:

• Added "Specular AA" graphics option. When enabled, TBN matrixes are built in the fragment shader rather than the vertex shader and geometric specular antialiasing is applied to the pbr roughness values. Enabling this option should significantly reduce or entirely eliminate specular aliasing introduced in the PBR and IBL updates.
• Primtive support for emissive materials. Materials that specify emission values will have said emission added to the result of the lighting calculation, making them appear illuminated. However, as the model viewer does not implement any form of bloom, the effect is not yet very convincing. Still, models with emissive materials will look more correct than they did in previous versions.

Known issues:

• I think the shaders are broken on AMD cards again. Idk, I don't really care anymore. Buy a real graphics card poor boy.