Address findings by kodi-addon-checker (#48)

addon.xml

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <addon id="script.service.hyperion" name="Hyperion Ambilight" version="1.0.6" provider-name="hyperion-project">
   <requires>
-    <import addon="xbmc.addon"  version="17.0.0"/>
-    <import addon="xbmc.python" version="3.0.0"/>
+    <import addon="xbmc.addon"  version="20.0.0"/>
+    <import addon="xbmc.python" version="3.0.1"/>
     <import addon="script.module.protobuf" version="4.23.2"/>
   </requires>
-  <extension point="xbmc.service" library="addon.py" start="login"/>
+  <extension point="xbmc.service" library="addon.py"/>
   <extension point="xbmc.addon.metadata">
     <summary lang="en_GB">Capture and send your current Kodi-picture to your Hyperion Ambient Lighting system.</summary>
     <summary lang="de_DE">Übermittle das aktuelle Kodi-Bild an dein Hyperion Ambient Lighting System.</summary>
@@ -18,7 +18,7 @@
     <platform>all</platform>
     <forum>https://hyperion-project.org/forum</forum>
     <website>https://www.hyperion-project.org</website>
-    <source>https://github.com/hyperion-project/script.service.hyperion</source>
+    <source>https://github.com/hyperion-project/hyperion.kodi</source>
     <license>MIT</license>
     <news>v1.0.6
       - Kodi Nexus support. Dropped earlier versions.