Cache upcoming images so they can be stepped through quicker

Issue #5 resolved
paul rule repo owner created an issue

There is a noticeable delay after selecting add or skip, presumably when the image is scaled to fit the window. Caching the next image may help speed it up so you can just flick through them.

Comments (2)

  1. paul rule reporter

    The next couple of untagged images are now cached, which makes navigating untagged images quick. If you go back over previous images though there will be no difference. This should be okay, since going back is an exception rather than the norm.

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