[Full Changelog](https://github.com/vector-im/riot-web/compare/v1.5.5...v1.5.6-rc.1) * Update Lithuanian language name [\#11599](https://github.com/vector-im/riot-web/pull/11599) * Enable more languages [\#11592](https://github.com/vector-im/riot-web/pull/11592) * Fix Docker build for develop and publish a /version file [\#11588](https://github.com/vector-im/riot-web/pull/11588) * Remove unused translations [\#11540](https://github.com/vector-im/riot-web/pull/11540) * Update from Weblate [\#11591](https://github.com/vector-im/riot-web/pull/11591) * Update riot.im enable_presence_by_hs_url for new matrix.org client URL [\#11565](https://github.com/vector-im/riot-web/pull/11565) * Remove mention of vector.im as default identity server on mobile guide [\#11544](https://github.com/vector-im/riot-web/pull/11544) * Clean up and standardise app config [\#11549](https://github.com/vector-im/riot-web/pull/11549) * make it clear that seshat requires electron-build-env (at least on macOS) [\#11527](https://github.com/vector-im/riot-web/pull/11527) * Add postcss-easings [\#11521](https://github.com/vector-im/riot-web/pull/11521) * ElectronPlatform: Add support for a event index using Seshat. [\#11125](https://github.com/vector-im/riot-web/pull/11125) * Sign all of the Windows executable files [\#11516](https://github.com/vector-im/riot-web/pull/11516) * Clarify that cross-signing is in development [\#11493](https://github.com/vector-im/riot-web/pull/11493) * get rid of bluebird [\#11301](https://github.com/vector-im/riot-web/pull/11301) * Update from Weblate [\#11488](https://github.com/vector-im/riot-web/pull/11488) * Add note in README about self-hosted riot installs requiring custom caching headers [\#8702](https://github.com/vector-im/riot-web/pull/8702) * De-dup theming code [\#11445](https://github.com/vector-im/riot-web/pull/11445) * Add eslint-plugin-jest because we inherit js-sdk's eslintrc and it wants [\#11448](https://github.com/vector-im/riot-web/pull/11448)