move spreadsheet file

demo/spreadsheet-graph.html

@@ -168,7 +168,7 @@
     <script type="module">
       import { FolkGeometry } from '../src/canvas/fc-geometry.ts';
       import { FolkConnection } from '../src/arrows/fc-connection.ts';
-      import { FolkSpreadsheet } from '../src/spreadsheet/spreadsheet.ts';
+      import { FolkSpreadsheet } from '../src/folk-spreadsheet.ts';
 
       FolkGeometry.register();
       FolkConnection.register();

demo/spreadsheet-propagator.html

@@ -169,7 +169,7 @@
       import { FolkMap } from '../src/folk-map.ts';
       import { FolkGeometry } from '../src/canvas/fc-geometry.ts';
       import { EventPropagator } from '../src/arrows/event-propagator.ts';
-      import { FolkSpreadsheet } from '../src/spreadsheet/spreadsheet.ts';
+      import { FolkSpreadsheet } from '../src/folk-spreadsheet.ts';
 
       FolkMap.register();
       FolkGeometry.register();

demo/spreadsheet.html

@@ -124,7 +124,7 @@
 
     <script type="module">
       import { FolkGeometry } from '../src/canvas/fc-geometry.ts';
-      import { FolkSpreadsheet } from '../src/spreadsheet/spreadsheet.ts';
+      import { FolkSpreadsheet } from '../src/folk-spreadsheet.ts';
 
       FolkGeometry.register();
       FolkSpreadsheet.register();