fix print statement

pyglance/glance/graphics.py

@@ -227,7 +227,7 @@ def create_cartopy_proj_objects (extents, out_proj4_str=None,) :
     # lat_top    = extents[3]
     lon_mid = calculate_lon_mid(lon_left, lon_right)  # handle lon wraparound case
     # lat_mid = (lat_top + lat_bottom) / 2.
-    print("Using central longitude: " + str(lon_mid))
+    LOG.debug("Using central longitude: " + str(lon_mid))
 
     # for now just use PlateCarree, in
     # FUTURE we will want to pick projections based on our input so we could use x and y when desired