ParticleAPI 3.0.0 Performant particle system API in C++ for interactive graphics

Here is a list of all class members with links to the classes they belong to:

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- Abs : pVec
- age : Particle_t
- Age_ : pSourceState
- AgeSigma_ : pSourceState
- alpha : Particle_t
- Alpha_ : pSourceState
- apex : PDCone, PDCylinder
- area : PDDisc, PDRectangle, PDTriangle
- Avoid() : PContextActions_t
- axis : PDCone, PDCylinder
- axisLenInvSqr : PDCone, PDCylinder