Dario Panici

Also update with master so the tests will run!

define torsion as zero at corners

#1122

check if evaluating a single point at the halfway pt yields the same error as the full grid evaluation

Source grid, eval grid, single one for each computeable, by default are the same (so i.e call compute twice if want things on same src but different eval grids, one...

utilities covering common cases i.e. rtz -> raz and having routine to map back on field period etc.

> Only failing regression tests are Near axis ones. @dpanici will look into those. Probably related to #839 Some plot tests seem to fail too?

> ```diff > | benchmark_name | dt(%) | dt(s) | t_new(s) | t_old(s) | > | -------------------------------------- | ---------------------- | ---------------------- | ---------------------- | ---------------------- | > test_build_transform_fft_lowres | -2.28...

- check master and maybe raise tols for the factorize assertion - if needed, throw an ignore simple filter on the test that throws this - play with ordering of...

change tol to be eps * size(A) or something