Feedback welcome

Like written here , I extended iOSLib with a currently fully untested collection of URLSession classes for background up- and download. Additionally, there’s an AppleError (= NSError) class available now and I extended CIFIlters and prepared a lot of virtual properties which are expected to only work if the filter carries such a property.
However, both class collections are huge, and I don’t have the time to test them, let alone ponder about what is still missing. I will add documentation the next weeks. Any feedback is highly welcome – may it be bug reports or suggestions for easier use.

Download as usual under iOSLib.