Downbit 0.2.4

• Xiaohongshu posts download again. Xiaohongshu showed Downbit its
  sign-in page rather than the post; Downbit now asks for a post as a
  browser does, and finds its video when you're signed in too.
• Errors show in the app's language: in Chinese, a download that fails
  says why in Chinese.
• The browser's side panel no longer offers Download Video and Audio
  for the page, which couldn't download anything on a site Downbit
  doesn't support. On such a site the panel says so, and the media the
  page plays, listed below, is what to download. Download Page in the
  toolbar is off there, unless the page embeds a supported site's player.
• The preview's Subtitles pill picks languages rather than tracks, as
  yt-dlp's --sub-langs does: a playlist offers the languages of its
  first item, and downloads its items' subtitles in those chosen.