Updated rtorrent-python library

- Fixed bug with basic auth on secure connections
 - Added 'test_connection' method to RTorrent class
 - Minor adjustment to authorization encoding

libs/rtorrent/__init__.py

@@ -89,13 +89,16 @@ class RTorrent:
 
     def _get_conn(self):
         """Get ServerProxy instance"""
-        if self.username is not None and self.password is not None:
+
+        if self.username and self.password:
             if self.scheme == 'scgi':
                 raise NotImplementedError()
 
+            secure = self.scheme == 'https'
+
             return self.sp(
                 self.uri,
-                transport=BasicAuthTransport(self.username, self.password),
+                transport=BasicAuthTransport(secure, self.username, self.password),
                 **self.sp_kwargs
             )