Display 3D trajectories, with a grid interface #1507

Job	Run time
get-commit-message	4s
test-cpu (finufft)	16m 37s
test-gpu (cufinufft)	12m 16s
test-cpu (pynfft)	4m 38s
test-gpu (gpunufft)	11m 52s
test-cpu (sigpy)	4m 32s
test-gpu (torchkbnufft-gpu)	14m 32s
test-examples	23m 2s
Build API Documentation	0s
coverage	23s
Compile the coverage badge in docs	0s
	1h 27m 56s

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