Decode bytes to str (fetch.py) (fixes #291)

lib/adapter/git_adapter.py

@@ -134,7 +134,7 @@ class GitRepositoryAdapter(RepositoryAdapter):    #pylint: disable=abstract-meth
         """
         local_repository_dir = cls.local_repository_location()
         state_filename = os.path.join(local_repository_dir, '.cached_revision')
-        open(state_filename, 'w').write(state)
+        open(state_filename, 'wb').write(state)
 
     @classmethod
     def get_state(cls):

lib/fetch.py

@@ -136,6 +136,7 @@ def _update_adapter(adptr):
     updates = []
     if cmd:
         errorcode, output = _run_cmd(cmd)
+        output = output.decode("utf-8")
         if errorcode:
             _log("\nERROR:\n---\n" + output + "\n---\nCould not get list of pages to be updated: %s" % adptr)
             return False