0.28

• Issue #295 An option to turn delta updates off.
• Issue #297 Another attempt to get built-in account working. Not guaranteed to succeed.
• Issue #298 Full path to download directory is now displayed in settings.

Note: this apk is not signed with the same signature as the f-droid apk. Uninstall the f-droid version before installing this one. Or just wait for the f-droid version to avoid confusion.