EasySnap 1.1 has been released and will be published within the next few days* on the Unity Asset Store.
The update adds support for using multiple EasySnap managers and also allows EasySnap to work in Unity’s edit mode. On top of that, it removes 9 more or less critical bugs, improves the “Max Grid size” setting and increases performance.
The corrected version of the EasySnap manual is available on the local asset page.