Update CHANGES.md for edge-18.9.3 release
+## edge-18.9.3
+
+* Web UI
+ * **Improved** Resource Detail page
+ * Better rendering of the dependency graph at the top of the page
+ * Unmeshed sources are now populated in the Inbound traffic table
+ * Sources and destinations are aligned in the popover
+ * **Improved** Tap and Top pages
+ * Additional validation and polish for the form controls
+ * The top table clears older results when a new top call is started
+ * The top table now aggregates by HTTP method as well
+* CLI
+ * **New** The namespace in which Linkerd is installed is configurable via the
+ `LINKERD_NAMESPACE` env var, in addition to the `--linkerd-namespace` flag
+ * **New** The wait time for the `check` and `dashboard` commands is
+ configurable via the `--wait` flag
+ * **Improved** The `top` command now aggregates by HTTP method as well
+
+Special thanks to @rochacon, @fahrradflucht and @alenkacz for contributing to
+this release!
+
## stable-2.0.0
## edge-18.9.2
