[Full Changelog](https://github.com/matrix-org/matrix-js-sdk/compare/v5.3.1-rc.3...v5.3.1-rc.4) * Retry account data upload requests [\#1347](https://github.com/matrix-org/matrix-js-sdk/pull/1347) * Fix: handle filter not found [\#1341](https://github.com/matrix-org/matrix-js-sdk/pull/1341) * Make getAccountDataFromServer return null if not found [\#1339](https://github.com/matrix-org/matrix-js-sdk/pull/1339) * Fix setDefaultKeyId to fail if the request fails [\#1337](https://github.com/matrix-org/matrix-js-sdk/pull/1337) * Fix: don't do extra /filter request when enabling lazy loading of members [\#1333](https://github.com/matrix-org/matrix-js-sdk/pull/1333) * Reject attemptAuth promise if no auth flow found [\#1331](https://github.com/matrix-org/matrix-js-sdk/pull/1331) * Serialise Olm prekey decryptions [\#1330](https://github.com/matrix-org/matrix-js-sdk/pull/1330)