Update CHANGES.md for v18.8.2 release
+## v18.8.2
+
+* CLI
+ * **New** `linkerd top` command has been added, displays live traffic stats
+ * `linkerd check` has been updated with additional checks, now supports a
+ `--pre` flag for running pre-install checks
+ * `linkerd check` and `linkerd dashboard` now support a `--wait` flag that
+ tells the CLI to wait for the control plane to become ready
+ * `linkerd tap` now supports a `--output` flag to display output in a wide
+ format that includes src and dst resources and namespaces
+ * `linkerd stat` includes additional validation for command line inputs
+ * All commands that talk to the Linkerd API now show better error messages
+ when the control plane is unavailable
+* Web UI
+ * **New** individual resources can now be viewed on a resource detail page,
+ which includes stats for the resource itself and its nearest neighbors
+ * **Experimental** web-based Top interface accessible at `/top`, aggregates
+ tap data in real time to display live traffic stats
+ * The `/tap` page has multiple improvements, including displaying additional
+ src/dst metadata, improved form controls, and better latency formatting
+ * All resource tables have been updated to display meshed pod counts, as well
+ as an icon linking to the resource's Grafana dashboard if it is meshed
+ * The UI now shows more useful information when server errors are encountered
+* Proxy
+ * The `h2` crate fixed a HTTP/2 window management bug
+ * The `rustls` crate fixed a bug that could improperly fail TLS streams
+* Control Plane
+ * The tap server now hydrates metadata for both sources and destinations
+
## v18.8.1
* Web UI
