BREAKING CHANGES: remove support for SSR

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

* issue with 4ae4d82590bbd8c835bea57a104b244d9cf6b9ff
* use `unref` from vca
* cache unreffed value in more places

https://github.com/vuejs/composition-api/issues/550

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Co-authored-by: Renovate Bot <bot@renovateapp.com>

BREAKING CHANGES: use `force` or set `deduplicate` to a value in milliseconds to force requeries

enables dcfa82d323a4ef9a6cc58fe0433143c28291475d

BREAKING CHANGES: if a query factory function returns a falsy value the query is not run

Co-authored-by: Renovate Bot <bot@renovateapp.com>

BREAKING CHANGE: if you are using `@sanity/client` or `@sanity/image-url` you will need to specify this dependency explicitly in your `package.json`