[Full Changelog](https://github.com/matrix-org/matrix-js-sdk/compare/v8.0.1...v8.1.0-rc.1) * Update on Promises [\#1438](https://github.com/matrix-org/matrix-js-sdk/pull/1438) * Store and request master cross-signing key [\#1437](https://github.com/matrix-org/matrix-js-sdk/pull/1437) * Filter out non-string display names [\#1433](https://github.com/matrix-org/matrix-js-sdk/pull/1433) * Bump elliptic from 6.5.2 to 6.5.3 [\#1427](https://github.com/matrix-org/matrix-js-sdk/pull/1427) * Replace Riot with Element in docs and comments [\#1431](https://github.com/matrix-org/matrix-js-sdk/pull/1431) * Remove leftover bits of TSLint [\#1430](https://github.com/matrix-org/matrix-js-sdk/pull/1430)