update changelog

Author: ocefpaf

CHANGES.txt

@@ -12,6 +12,7 @@
 - Added `fullscreen` plugin (sanga #437)
 - Added `smooth_factor `option to `GeoJSON`, `TopoJSON` and `Choropleth` (JamesGardiner #428)
 - `Map` object now accepts Leaflet global switches (sgvandijk #424)
+- Added weight option to CircleMarker (palewire #581)
 
 Bug Fixes
 
@@ -20,6 +21,7 @@ Bug Fixes
 - Fixed MIME type (text/plain) is not executable (talespaiva #440)
 - Update Travis-CI testing to incorporate branca and fix notebook tests (ocefpaf #436)
 - Removed MultiPolyLine and MultiPolygon, both are handled by PolyLine and PolyLine in leaflet 1.0.* (ocefpaf #554)
+- Removed deprecated MapQuest tiles (HashCode55 #562)
 
 0.2.1
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