Small change for new SQ.W warning

- added an entry in the tables.py for the snow quall warning

awips/tables.py

@@ -1774,6 +1774,10 @@ vtec = {
               'sig': 'Y',
               'color': 'khaki',
               'hdln': 'Dense Smoke Advisory'},
+    'SQ.W' : {'phen': 'SQ',
+              'sig': 'W',
+              'color': '#EF2B1C',
+              'hdln': 'Snow Squall Warning'},
     'SR.A' : {'phen': 'SR',
               'sig': 'A',
               'color': 'violet',