Update v1.2.0 (#12)

Features

- Add `data_count` to overview model
- Add `etag`, `length` and `quota` params to RequestResult

Changes

- Update dependencies
- Update HawAPIOptions documentation

Fixes

- Fix wrong `languages` type in overview model

*Bump version to 1.2.0*
*Upgrade to yarn 4.X*

feat: Make options partial on createClient

feat: Add publishConfig to package.json