Stop copying whole image before cropping (again)

[fepegar]

Applying

• Stop copying whole image before cropping #1308

again as it was not the culprit of the memory leak, as discussed in that pull request.

Thanks again @StijnvWijn for your investigation and your work on this important feature.

[fepegar]

@StijnvWijn, please let me know if you're happy for me to merge this.

[StijnvWijn]

@fepegar Yess, awesome looks good!
Do you want to put the fix for the memory leak into another PR?

[fepegar]

Thanks for checking!

The memory leak is not an issue since

• Revert warning when SubjectsLoader is not used #1340

What might be nice is adding that check again but without the memory leak. Is that what you mean?

In any case that's indeed out of the scope of this PR.

[fepegar]

@allcontributors please add @StijnvWijn for bug

[allcontributors]

@fepegar

I've put up a pull request to add @StijnvWijn! 🎉