parsing psc with image urls does not result in `Chapter` structs with images

but it should. use e.g.
<psc:chapters version="1.2" xmlns:psc="http://podlove.org/simple-chapters">
  <psc:chapter start="00:01:30.000" title="8 Jahre Fanboys (7.1.11)" href="http://patreon.com/fanboys"/>
  <psc:chapter start="00:08:15.000" title="Schlechte Apple Zahlen" href="https://500ish.com/apples-precarious-and-pivotal-2019-f4f8cea3993a" image="http://fanboys.fm/assets/123/Chapter02.jpeg"/>
  <psc:chapter start="00:13:29.000" title='"New services this year"' href="https://www.theverge.com/2019/1/8/18174572/apple-tim-cook-announce-new-services-this-year-tv" image="http://fanboys.fm/assets/123/Chapter03.jpeg"/>
  <psc:chapter start="00:17:32.000" title="iTunes Store auf Samsung, HomeKit und Airplay auf LG und Vizio TVs" href="https://www.theverge.com/2019/1/6/18170797/samsung-2019-tvs-itunes-support-airplay-2" image="http://fanboys.fm/assets/123/Chapter04.jpeg"/>
  <psc:chapter start="00:20:37.000" title="Your TV is watching YOU" image="http://fanboys.fm/assets/123/Chapter05.jpeg"/>
  <psc:chapter start="00:22:01.000" title="Black Mirror: Bandersnatch (Netflix)" href="https://www.netflix.com/title/80988062" image="http://fanboys.fm/assets/123/Chapter06.jpeg"/>
  <psc:chapter start="00:41:51.792" title="Erratum: Wir meinen Steve Jackson" href='https://en.wikipedia.org/wiki/Steve_Jackson_(American_game_designer)#The_two_"Steve_Jacksons"' image="http://fanboys.fm/assets/123/Chapter07.jpeg"/>
  <psc:chapter start="00:42:52.000" title="Switch" href="https://en.wikipedia.org/wiki/Nintendo_Switch" image="http://fanboys.fm/assets/123/Chapter08.jpeg"/>
  <psc:chapter start="01:00:36.000" title="Dead Cells" href="https://dead-cells.com/" image="http://fanboys.fm/assets/123/Chapter09.jpeg"/>
  <psc:chapter start="01:05:19.000" title="Bound" href="http://bound.timbueno.com" image="http://fanboys.fm/assets/123/Chapter10.jpeg"/>
  <psc:chapter start="01:10:16.000" title="Manything" href="https://manything.com/" image="http://fanboys.fm/assets/123/Chapter11.jpeg"/>
  <psc:chapter start="01:11:53.000" title="IINA" href="https://iina.io" image="http://fanboys.fm/assets/123/Chapter12.jpeg"/>
  <psc:chapter start="01:17:51.000" title="Gris (Switch/Mac/PC)" href="https://www.polygon.com/reviews/2018/11/8/18069254/gris-review-switch-pc-devolver-digital" image="http://fanboys.fm/assets/123/Chapter13.jpeg"/>
  <psc:chapter start="01:21:47.000" title="Sound of Magic" href="http://soundofmagic.everbytestudio.com/en/" image="http://fanboys.fm/assets/123/Chapter14.jpeg"/>
  <psc:chapter start="01:24:10.000" title="Gone Home" href="https://gonehome.game" image="http://fanboys.fm/assets/123/Chapter15.jpeg"/>
  <psc:chapter start="01:35:18.549" title="Rausschmeisser"/>
</psc:chapters>
as example
podlove / chapters

parsing psc with image urls does not result in `Chapter` structs with images #1
