bump version, changelog and updating for 2.1

UPDATING.md

@@ -22,7 +22,7 @@ under the License.
 This file documents any backwards-incompatible changes in Superset and
 assists people when migrating to a new version.
 
-## Next
+## 2.1.0
 
 - [22022](https://github.com/apache/superset/pull/22022): HTTP API endpoints `/superset/approve` and `/superset/request_access` have been deprecated and their HTTP methods were changed from GET to POST
 - [20606](https://github.com/apache/superset/pull/20606): When user clicks on chart title or "Edit chart" button in Dashboard page, Explore opens in the same tab. Clicking while holding cmd/ctrl opens Explore in a new tab. To bring back the old behaviour (always opening Explore in a new tab), flip feature flag `DASHBOARD_EDIT_CHART_IN_NEW_TAB` to `True`.
@@ -31,13 +31,12 @@ assists people when migrating to a new version.
 - [21163](https://github.com/apache/superset/pull/21163): The time grain will be decoupled from the time filter column and the time grain control will move below the X-Axis control when `GENERIC_CHART_AXES` feature flags set to `True`. The time grain will be applied on the time column in the column-like controls(x axis, dimensions) instead of the time column in the time section.
 - [21284](https://github.com/apache/superset/pull/21284): The non-functional `MAX_TABLE_NAMES` config key has been removed.
 - [21794](https://github.com/apache/superset/pull/21794): Deprecates the undocumented `PRESTO_SPLIT_VIEWS_FROM_TABLES` feature flag. Now for Presto, like other engines, only physical tables are treated as tables.
-
-### Breaking Changes
-
 - [22798](https://github.com/apache/superset/pull/22798): To make the welcome page more relevant in production environments, the last tab on the welcome page has been changed from to feature all charts/dashboards the user has access to (previously only examples were shown). To keep current behavior unchanged, add the following to your `superset_config.py`: `WELCOME_PAGE_LAST_TAB = "examples"`
 - [22328](https://github.com/apache/superset/pull/22328): For deployments that have enabled the "THUMBNAILS" feature flag, the function that calculates dashboard digests has been updated to consider additional properties to more accurately identify changes in the dashboard metadata. This change will invalidate all currently cached dashboard thumbnails.
 - [21765](https://github.com/apache/superset/pull/21765): For deployments that have enabled the "ALERT_REPORTS" feature flag, Gamma users will no longer have read and write access to Alerts & Reports by default. To give Gamma users the ability to schedule reports from the Dashboard and Explore view like before, create an additional role with "can read on ReportSchedule" and "can write on ReportSchedule" permissions. To further give Gamma users access to the "Alerts & Reports" menu and CRUD view, add "menu access on Manage" and "menu access on Alerts & Report" permissions to the role.
 
+### Breaking Changes
+
 ### Potential Downtime
 
 - [21284](https://github.com/apache/superset/pull/21284): A change which drops the unused `dbs.allow_multi_schema_metadata_fetch` column via a (potentially locking) DDL operation.

superset-frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "superset",
-  "version": "0.0.0-dev",
+  "version": "2.1.0",
   "description": "Superset is a data exploration platform designed to be visual, intuitive, and interactive.",
   "keywords": [
     "big",