fix indentation bug and add install requirement

paddle_fl/core/trainer/fl_trainer.py

@@ -16,7 +16,7 @@ import logging
 from paddle_fl.core.scheduler.agent_master import FLWorkerAgent
 import numpy
 import hmac
-from .diffiehellman.diffiehellman import DiffieHellman
+#from .diffiehellman.diffiehellman import DiffieHellman
 
 class FLTrainerFactory(object):
     def __init__(self):

paddle_fl/version.py

@@ -12,5 +12,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """ PaddleFL version string """
-fl_version = "0.1.2"
-module_proto_version = "0.1.2"
+fl_version = "0.1.3"
+module_proto_version = "0.1.3"