- [X] Add the basic trilinear relaxation - [ ] Compute and plot relaxation cases as a sanity check. - [ ] Check performance (no allocations in benchmarking) - [ ] Add unit tests for trilinear - [ ] Default to the trilinear relaxation for `*(x,y,z)` - [ ] Add methods for `*(x, y, z, a, b, c)` and so on which use use the trilinear form rather than `*(x, *(y, *(z, *(a, *(b, c)))))`
*(x,y,z)*(x, y, z, a, b, c)and so on which use use the trilinear form rather than*(x, *(y, *(z, *(a, *(b, c)))))