Unity 2017.3b feature preview: Assembly Definition Files and Transform Tool
https://blogs.unity3d.com/ru/2017/11/22/unity-2017-3b-feature-preview-assembly-definition-files-and-transform-tool/
https://blogs.unity3d.com/ru/2017/11/22/unity-2017-3b-feature-preview-assembly-definition-files-and-transform-tool/