Close button in CG rather than using bundled images #211
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Attaching resource bundles with iOS frameworks is a rather broken process. When you have simple graphics to package with a framework, it is preferable (when practical) to draw them in CoreGraphics rather than bundle them as images. It also reduces the framework footprint.
In this case, after installing from Cocoapods, XCode was giving me a lot of trouble claiming that the bundle did not exist. Instead of bothering to fix this, I just redid the button in CoreGraphics.