chore: lazily load large dependencies #49
Merged
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This reduces the package loading time from 4.1s to 0.8s on my machine
without affecting the execution time much. For 512x512 image:
assess_psnr
:before: 61.394 μs (0 allocations: 0 bytes)
after: 62.824 μs (12 allocations: 352 bytes)
assess_ssim
:before: 9.029 ms (812 allocations: 41.13 MiB)
after: 8.944 ms (869 allocations: 41.13 MiB)