3.3.1

• add support for feed tag podcast:funding (see Podcast Settings -> Directory)
• unfurl uses https://plus.podlove.org/api/unfurl as API endpoint
• add banner linking to donations page (can be dismissed)
• shownotes:
  • add shortcode [podlove-episode-shownotes]
  • display links even if unfurling failed
  • template improvements
  • add "delete all" button
  • polished failure section UI and allow editing original URL
  • API: add missing permission callbacks
  • fix: keep order when importing via slacknotes
• slacknotes: update to new API
• change donation URL to https://opencollective.com/podlove
• fix: handle missing templates in TwigLoaderPodloveDatabase