zero errors and two warnings after flat migration of RoomEditorApp from Revit 2016 to Revit 2017:

------ Rebuild All started: Project: RoomEditorApp, Configuration: Debug Any CPU ------
C:\a\vs\RoomEditorApp\RoomEditorApp\CmdUploadRooms.cs(401,23,402,33): warning CS0618: 'Plane.Plane(XYZ, XYZ, XYZ)' is obsolete: 'This method is obsolete in Revit 2017. Please use Plane.CreateByOriginAndBasis() instead.'
C:\a\vs\RoomEditorApp\RoomEditorApp\CmdUploadRooms.cs(501,21,502,31): warning CS0618: 'Plane.Plane(XYZ, XYZ, XYZ)' is obsolete: 'This method is obsolete in Revit 2017. Please use Plane.CreateByOriginAndBasis() instead.'
  RoomEditorApp -> C:\a\vs\RoomEditorApp\RoomEditorApp\bin\Debug\RoomEditorApp.dll
          1 file(s) copied.
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========