Make use_list param configurable

By default the `use_list` parameter tells msgpack to unpack array to
Python's list which is not hashable and can not be used as a dict keys
and sets elements. Django expects the response rows to be tuples
because it will be used in python set() [1]

Now the `use_list` parameter can be configured in the Connection init

[1] https://github.com/django/django/blob/stable/3.0.x/django/contrib/auth/management/__init__.py#L72

Author: artembo

tarantool/connection.py

@@ -108,6 +108,7 @@ def __init__(self, host, port,
                  connect_now=True,
                  encoding=ENCODING_DEFAULT,
                  call_16=False,
+                 use_list=True,
                  connection_timeout=CONNECTION_TIMEOUT):
         '''
         Initialize a connection to the server.
@@ -142,6 +143,7 @@ def __init__(self, host, port,
         self.error = True
         self.encoding = encoding
         self.call_16 = call_16
+        self.use_list = use_list
         self.connection_timeout = connection_timeout
         if connect_now:
             self.connect()

tarantool/response.py

@@ -53,7 +53,7 @@ def __init__(self, conn, response):
         # created in the __new__().
         # super(Response, self).__init__()
 
-        kwargs = dict(use_list=True)
+        kwargs = dict(use_list=conn.use_list)
         if msgpack.version >= (1, 0, 0):
             # XXX: Explain why it is necessary.
             kwargs['strict_map_key'] = False