Work around a libtorrent 1.1.0 issue

There's no add_torrent_params in 1.1.0

epour/session.py

@@ -24,6 +24,7 @@ import mimetypes
 from urllib.parse import urlparse, urlsplit
 import logging
 import shutil
+from distutils.version import LooseVersion
 try:
     import cPickle
 except ImportError:
@@ -36,6 +37,7 @@ from efl.ecore import Timer
 
 from xdg.BaseDirectory import save_data_path, load_data_paths
 
+lt_version = LooseVersion(lt.version)
 
 log = logging.getLogger("epour.session")
 
@@ -296,11 +298,15 @@ class Session(lt.session):
                             else:
                                 params.trackers = list(set(params.trackers))
 
-                    if params is None:
-                        params = lt.add_torrent_params()
+                    if lt_version < LooseVersion("1.1.1.0"):
+                        if params is None:
+                            params = params_dict
+                    else:
+                        if params is None:
+                            params = lt.add_torrent_params()
 
-                    for k, v in params_dict.items():
-                        setattr(params, k, v)
+                        for k, v in params_dict.items():
+                            setattr(params, k, v)
 
                     try:
                         self.async_add_torrent(params)