Update CARLA and ROS Bridge compatibility note (#384)

* Updated ros-bridge and carla compatibility note

* Merge branch 'master' of https://github.com/carla-simulator/ros-bridge into joel-mb/bridge_carla_compatibility

* Merge branch 'master' of https://github.com/carla-simulator/ros-bridge into joel-mb/bridge_carla_compatibility

* update to 0.9.10

README.md

@@ -4,7 +4,7 @@ This ROS package aims at providing a simple ROS bridge for CARLA simulator.
 
 ![rviz setup](./docs/images/ad_demo.png "AD Demo")
 
-**This version requires CARLA 0.9.9.5**
+**This version requires CARLA 0.9.10**
 
 ## Features
 

carla_ros_bridge/src/carla_ros_bridge/bridge.py

@@ -57,7 +57,7 @@ class CarlaRosBridge(object):
     Carla Ros bridge
     """
 
-    CARLA_VERSION = "0.9.9"
+    CARLA_VERSION = "0.9.10"
 
     def __init__(self, carla_world, params):
         """
@@ -586,16 +586,17 @@ def main():
 
         # check carla version
         dist = pkg_resources.get_distribution("carla")
-        if LooseVersion(dist.version) < LooseVersion(CarlaRosBridge.CARLA_VERSION):
+        if LooseVersion(dist.version) != LooseVersion(CarlaRosBridge.CARLA_VERSION):
             rospy.logfatal("CARLA python module version {} required. Found: {}".format(
                 CarlaRosBridge.CARLA_VERSION, dist.version))
             sys.exit(1)
 
-        if LooseVersion(carla_client.get_server_version()) < \
-           LooseVersion(CarlaRosBridge.CARLA_VERSION):
-            rospy.logfatal("CARLA Server version {} required. Found: {}".format(
-                CarlaRosBridge.CARLA_VERSION, carla_client.get_server_version()))
-            sys.exit(1)
+        if LooseVersion(carla_client.get_server_version()) != \
+           LooseVersion(carla_client.get_client_version()):
+            rospy.logwarn(
+                "Version mismatch detected: You are trying to connect to a simulator that might be incompatible with this API. Client API version: {}. Simulator API version: {}"
+                .format(carla_client.get_client_version(),
+                        carla_client.get_server_version()))
 
         carla_world = carla_client.get_world()