• fixed Bin in FeedDetails showing full episodes when empty
• on new install, first opens FindFeeds screen
• amended Search screen
  • search texts are persisted (capped around 20) and can be recalled
  • search options are by default hidden, tap "Setting" icon to show
• when starting a new episode, skipSilence is reset
• fixed deprecation of CountingInputStream
• amended the code checking ID3 header
• some code refactoring