Bump xbmc.python requirement to 3.0.1, as advised for the nexus branch

Author: bossanova808

addon.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <addon id="plugin.switchback" name="Switchback" version="2.0.1" provider-name="bossanova808">
     <requires>
-        <import addon="xbmc.python" version="3.0.0" />
+        <import addon="xbmc.python" version="3.0.1" />
         <import addon="script.module.bossanova808" version="1.0.3" />
     </requires>
     <!-- The main service entry point, to keep track of playbacks -->