Silvio Rizzi has released an update to his popular Reeder Google Reader client for tbhe iPhone and iPod touch. Reeder 2.0.3 adds support for background task completion on multitasking-capable iOS 4 devices, allowing synchronization to finish in the background after the app is closed. The update also adds a new setting to allow users to choose whether folders should open as a list of feeds or articles by default and fixes some graphic and compatibility…