Release v0.4
This release:
- provides a number of improvements to radial search performance
- changes the matrix-free Eigen operators significantly. These now take generic C++ function objects, rather than symbolic expressions.
- adds a matrix-free operator using Chebyshev interpolation to speed up its operation on a vector (at a cost to accuracy).
- adds a few more bug fixes and documentation. Its goal is to accompany the paper "Particle-based and meshless methods with Aboria", submitted to the SoftwareX journal