MR Level Editor

FEAT: undo/redo (terrain and object editing) FEAT: HUGE terrain height editing performance improvement (for Unity 5.2.2 or higher) FEAT: variations property: materials can be changed and child objects can be activated/deactivated on runtime FEAT: find button: instances of the selected prefab are selected and focused one after another FEAT: object are listed in groups, where each group demonstrates a certain editor feature