Merge branch 'next' into docs

.gitlab-ci.yml

.vscode/extensions.json

.vscode/launch.json

.vscode/settings.json

Cargo.lock

Cargo.toml

README.md

cross/README.md

src/client_server/account.rs

src/client_server/alias.rs

src/client_server/backup.rs

src/client_server/capabilities.rs

src/client_server/config.rs

src/client_server/context.rs

src/client_server/device.rs

src/client_server/directory.rs

src/client_server/filter.rs

src/client_server/keys.rs

src/client_server/media.rs

src/client_server/membership.rs