Update CHANGES.txt

Conengmo · web-flow · commit f4772752030b · 2018-11-13T14:30:22.000+01:00
diff --git a/CHANGES.txt b/CHANGES.txt
@@ -11,6 +11,7 @@
 API changes
 
 - `threshold_scale` argument of choropleth is replaced by `bins` (FloChehab #1005)
+- `Map.choropleth()` moved to `Choropleth` class, former is deprecated (Conengmo #1011)
 
 Bug Fixes
 
