Make sure we turn ambient pressure to an int.

Author: rpavlik

adafruit_scd30.py

@@ -123,6 +123,7 @@ def ambient_pressure(self):
 
     @ambient_pressure.setter
     def ambient_pressure(self, pressure_mbar):
+        pressure_mbar = int(pressure_mbar)
         if pressure_mbar != 0 and (pressure_mbar > 1200 or pressure_mbar < 700):
             raise AttributeError("ambient_pressure must be from 700 to 1200 mBar")
         self._send_command(_CMD_CONTINUOUS_MEASUREMENT, pressure_mbar)