• [new]Support dark mode for Android 10+.
• [new]Support OPML import and export.
• [optimize]Remove Manual Refresh in settings, update manual refresh logic.
  • Refresh list if list never scroll when sync done.
  • Otherwise, if new items fetched for current list, show manual refresh tips.
• [optimize]Hide New button in Add tag dialog for Tiny Tiny RSS, and fix #369
• [optimize]Clear feed when logout.