Update xbmc.python version to 2.20.0 (Isengard)

Author: anxdpanic

addon.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <addon id="script.module.python.twitch" name="python-twitch for Kodi" version="2.0.0~alpha1" provider-name="A Talented Community">
     <requires>
-        <import addon="xbmc.python" version="2.1.0"/>
+        <import addon="xbmc.python" version="2.20.0"/>
         <import addon="script.module.six" version="1.9.0"/>
         <import addon="script.module.requests" version="2.9.1"/>
     </requires>