Revert to imperial units for MetOffice uploads

In an email to me the Met Office revealed that the metric units listed
in their API don't work and the don't know when this will be fixed.

Signed-off-by: Jim Easterbrook <jim@jim-easterbrook.me.uk>

src/pywws/__init__.py

@@ -1,3 +1,3 @@
 __version__ = '18.5.0'
-_release = '1526'
-_commit = '68486c4'
+_release = '1527'
+_commit = '8488377'

src/pywws/service/metoffice.py

@@ -73,14 +73,14 @@ class ToService(pywws.service.BaseToService):
 #live#
 #idx          "'dateutc'    : '%Y-%m-%d %H:%M:%S',"#
 #wind_dir     "'winddir'    : '%.0f'," "" "winddir_degrees(x)"#
-#wind_ave     "'windspeedms': '%.1f',"#
-#wind_gust    "'windgustms' : '%.1f',"#
+#wind_ave     "'windspeedmph': '%.2f'," "" "wind_mph(x)"#
+#wind_gust    "'windgustmph' : '%.2f'," "" "wind_mph(x)"#
 #hum_out      "'humidity'   : '%.d',"#
-#temp_out     "'tempc'      : '%.1f',"#
-#rel_pressure "'mslphpa'    : '%.1f',"#
-#calc "dew_point(data['temp_out'], data['hum_out'])" "'dewptc': '%.1f',"#
-#calc "rain_hour(data)" "'rainmm': '%.1f',"#
-#calc "rain_day(data)" "'dailyrainmm': '%.1f',"#
+#temp_out     "'tempf'       : '%.1f'," "" "temp_f(x)"#
+#rel_pressure "'baromin'    : '%.4f'," "" "pressure_inhg(x)"#
+#calc "temp_f(dew_point(data['temp_out'], data['hum_out']))" "'dewptf': '%.1f',"#
+#calc "rain_inch(rain_hour(data))" "'rainin': '%g',"#
+#calc "rain_inch(rain_day(data))" "'dailyrainin': '%g',"#
 """
 
     def __init__(self, context):