Update CHANGELOG

Author: mbostock

CHANGELOG.md

@@ -68,7 +68,9 @@ The [bin](./README.md#bin) and [group](./README.md#group) transforms now propaga
 Plot.rectY(data, Plot.binX({y: "count"}, {x: "body_mass_g", fill: "species", title: d => `${d.species} ${d.sex}`}))
 ```
 
-The bin transform now supports shorthand reducers for the bin extent: *x1*, *x2*, *y1*, and *y2*. The window transform now supports the *first* and *last* reducers to select the first or last element of the window, respectively. The new generalized [select transform](./README.md#select) can now call a custom selector function, or the shorthand *min* and *max*, to select the points to display. The selector function is passed two arguments: the index of the current group (*e.g.*, [0, 1, 2, …]) and the given channel’s values. For example, to select the dot with the greatest *fill* value:
+The bin transform now supports shorthand reducers for the bin extent: *x1*, *x2*, *y1*, and *y2*. The window transform now supports the *first* and *last* reducers to select the first or last element of the window, respectively.
+
+The new generalized [select transform](./README.md#select) can now call a custom selector function, or the shorthand *min* and *max*, to select the points to display. The selector function is passed two arguments: the index of the current group (*e.g.*, [0, 1, 2, …]) and the given channel’s values. For example, to select the dot with the greatest *fill* value:
 
 ```js
 Plot.dotX(data, Plot.select({fill: "max"}, {x: "letter", fill: "frequency", stroke: "black"})