made some changes

ZCW-MacroLabs-OOP-ScientificCalculator

+Subproject commit 23b4dae03b84141bdcef7d9384b87f7bb7e30912

package.bluej

 #BlueJ package file
-editor.fx.0.height=0
-editor.fx.0.width=0
-editor.fx.0.x=0
-editor.fx.0.y=0
+editor.fx.0.height=717
+editor.fx.0.width=800
+editor.fx.0.x=240
+editor.fx.0.y=23
 objectbench.height=99
 objectbench.width=1256
 package.divider.horizontal=0.6