QuickPic 3.9 release:
Android 5.0 material style, cleaner UI (the screen shot is running in 4.4, material dialogs also in release version)
Single thumbnail view as default, "Stack" as an option
Long press a folder to change cover
Optimize Picasa albums structure (move G+ posted pictures into a single folder [Posted in Google+])
Fix: edit hidden picture failedhttp://alensw.com/assets/quickpic_3.9.apk
We don't use Google Play Beta channel because many "App store" grab the APK into their site as a release version, it's very annoying.