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Description
The goal of this PR is to refine the image caching system previously introduces by adding new functionnalities and improving code quality.
Features list
contains
method for checking if a given image is in the cache (without affecting LRU ordering)cachedOnly
flag to retrieve an image only if it is in the cache (i.e no image will be loaded from disk)lazyCleaning
flag to enable/disable lazy cleaning (= cleaning large images in priority instead of respecting LRU ordering)missingCapacity
computation