add changes to changelog

Author: bitner

CHANGES.md

@@ -5,6 +5,7 @@ Add options to reduce the bandwidth required for returning record geometries.
  - bbox-only=[bool] only return the bounding box in the return geometry
  - geom-column=none don't return geometry as part of the return
  - simplify=[float] Use ST_SnapToGrid(ST_Simplify(geom, [simplify]),[simplify]) to simplify and reduce precision of output geometry.
+ - sortby=[+/-][field] support to sorting by a field
 
 ## 0.1.0