Documents caches

Some documents generate cache files when they're saved. For instance, Soils and Plants are creating caches when saved. These documents caches are helpful to speed-up the loading of the document when it gets used in a scene. Documents caches are stored in the .red proprietary file format and are located under the "Cache" folder of the working directory structure.

Document caches load much faster than the document data they represent. They take some disk space too ;)

Some rules about documents caches: