some compatibility fixes and upload instructions

src/modules/stage/stage.cpp

@@ -110,6 +110,7 @@ void start_move(long displ[n_motors])
     move_start_time = micros();
     final_scaled_t = (float)max_steps * min_step_delay; //NB total time taken will be final_scaled_t + 2*ramp_time
     stage_moving = true;
+    Serial.println("done.");
 }
 
 void stage_loop()
@@ -209,6 +210,7 @@ void stage_release(String command)
     {
         releaseMotor(i);
     }
+    Serial.println("done");
 }
 
 void stage_p(String command)

src/modules/stage/stage.h

@@ -4,7 +4,6 @@
 #include <Arduino.h>
 
 #define EACH_MOTOR for (int i = 0; i < STAGE_N_MOTORS; i++)
-#define VER_STRING "Sangaboard Firmware v0.6"
 
 void stage_setup();
 void stage_loop();