Merge pull request #17 from strangeliu/main

Replace drawable.addPresentedHandler with commandBuffer.addCompletedH…

Sources/ColorfulX/MulticolorGradientView.swift

@@ -62,7 +62,7 @@ open class MulticolorGradientView: MetalView {
             lock.unlock()
             return
         }
-        drawable.addPresentedHandler { _ in
+        commandBuffer.addCompletedHandler { _ in
             lock.unlock()
         }