Sensor reset now resets the corresponding sensor

... and not all devices. For this functionality, the EV3-method
resetAllDeviceValues has been added.

source/EV3.m

@@ -256,6 +256,11 @@ classdef EV3 < MaskedHandle
             % Sends a stop-command to all motor-ports.
             ev3.commInterface.outputStopAll();
         end
+        
+        function resetAllDeviceValues(ev3)
+            % Resets values of all sensors on all ports (including tacho counter on motors)
+            ev3.handleCommand(@inputDeviceClrAll, false, 0);
+        end
 
         %% Sound functions
         function beep(ev3)

source/Sensor.m

@@ -235,13 +235,11 @@ classdef Sensor < MaskedHandle
         function reset(sensor)
             % Resets sensor value.
             %
-			% Notes:
-            %     * This clears ALL the sensors right now, no other Op-Code available... :(
+            % Notes:
+            %     * Has not been thoroughly tested but seems to work as expected
             %
             
-%             warning(['Current version of reset resets ALL devices, that is, ',...
-%                      'all motor tacho counts and all other sensor counters!']);
-            sensor.handleCommand(@inputDeviceClrAll, false, 0);
+            sensor.handleCommand(@inputDeviceClrChanges, false, 0, sensor.port);
         end
         
         %% Setter