3.20.0

Add RPC to check if a gateway EUI is claimable.
OAuth client management in the account app.
Support claim protection when claiming end devices on The Things Join Server.
CLI commands notifications list and notifications set-status to manage user notifications.
Support for class B and C downlink transmissions through multiple gateways simultaneously.

Entities are now fully validated when updated in the stores.
- Previously only the updated paths where validated. This lead to situations in which a partial update could cause the entity as a whole to reach an invalid state.
Application, gateway, end device and organization-tables in the Console are now sorted by creation time by default (newest first).
Collaborator and API Key tables can now be sorted in the Console.
The application table in the Console now shows the amount of end devices.
The organizations table in the Console now shows the amount of collaborators.
Table layouts for several entities have been improved on the Console.
The Storage Integration now stores data using the json data type instead of jsonb. This is relevant for decoded payloads which may contain null characters.
- This mainly affects the TimescaleDB/PostgreSQL backend.
- This requires a database schema migration (ttn-lw-stack storage-db migrate) because of the update column.
Default raw data retention for the Network Operation Center is now 3 days (instead of 30 days). You can override this with the noc.store.raw-data-retention setting.
- For changes to take effect, perform a database schema migration (tti-lw-stack noc-db migrate).

End devices running on MAC versions higher or equal to 1.1 showing network downlink frame counters instead of application downlink frame counters.
Wrong representation of time values between midnight and 1am (eg. 24:04:11) in the Console in some cases.