Added .. versionadded tag to reverse parameter

Author: timhoffm

lib/matplotlib/legend.py

@@ -213,6 +213,8 @@ def _update_bbox_to_anchor(self, loc_in_canvas):
     If *True*, the legend labels are displayed in reverse order from the input.
     If *False*, the legend labels are displayed in the same order as the input.
 
+    ..versionadded:: 3.7
+
 frameon : bool, default: :rc:`legend.frameon`
     Whether the legend should be drawn on a patch (frame).