- added new scenes
- added implicit viscosity (Bender and Koschier, "Divergence-free SPH for incompressible and viscous fluids", IEEE Transactions on Visualization and Computer Graphics, 2017)
- added Projective Fluids implementation (Weiler et al., "Projective Fluids", Proceedings of Motion in Games, ACM, 2016)
- updated CompactNSearch
- updated PositionBasedDynamics
- optimized DFSPH
- updated to Eigen 3.3