message: Adding a note about 0.30 to updating
diff: @@ -37,6 +37,12 @@ favor of good old `npm install`. While yarn should still work just fine,
  you should probably align to guarantee builds similar to the ones we
  use in testing and across the community in general.
  +## Superset 0.30.0
  +* 0.30.0 includes a db_migration that removes allow_run_sync. This may
  +require downtime because during the migration if the db is migrated first,
  +superset will get 500 errors when the code can't find the field (until
  +the deploy finishes).
  +
  ## Superset 0.29.0
  * India was removed from the "Country Map" visualization as the geojson
  file included in the package was very large
  